MyBB Community Forums

Installation was smooth and no errors. But when I log into my admin account none of the options work!
See the attached screenshot of the error I got.

Anyone? I really need help, and fast...
PLEASE?

---

Here's the entire error log:
[Tue May 20 01:05:06 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 01:05:06 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
SoftException in Application.cpp:246: Directory "/home/ricardo/public_html/boards/admin" is writeable by group
[Tue May 20 01:04:58 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 01:04:58 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
SoftException in Application.cpp:246: Directory "/home/ricardo/public_html/boards/admin" is writeable by group
[Tue May 20 00:59:50 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:59:50 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:59:48 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:59:48 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:59:45 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:59:45 2008] [alert] [client 67.187.5.164] /home/ricardo/public_html/.htaccess: Invalid command '-FrontPage-', perhaps mis-spelled or defined by a module not included in the server configuration
[Tue May 20 00:54:05 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:54:05 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:54:01 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:54:01 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:52:31 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:52:31 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:52:27 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:52:27 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:48:25 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:48:25 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:48:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:48:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:43:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:43:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:42:13 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:42:13 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:41:49 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:41:49 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:32:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:32:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:30:59 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:30:59 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:29:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:29:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:29:03 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:29:03 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:20:52 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:20:52 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:20:38 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:20:38 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:20:13 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:20:13 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:20:10 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:20:10 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:19:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:19:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:08:08 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:08:08 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:06:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:06:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:05:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Tue May 20 00:05:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Tue May 20 00:05:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:05:45 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Tue May 20 00:02:20 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/404.shtml
[Tue May 20 00:02:20 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/robots.txt
[Tue May 20 00:00:33 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Tue May 20 00:00:33 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 23:58:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 23:58:56 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 23:56:24 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:56:24 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 23:50:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/boards/404.shtml
[Mon May 19 23:50:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/boards/favicon.ico
[Mon May 19 23:49:20 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:49:20 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/memberlist.php
[Mon May 19 23:46:46 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:46:46 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/search.php
[Mon May 19 23:44:11 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:44:11 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/index.php
[Mon May 19 23:41:37 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:41:37 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/showteam.php
[Mon May 19 23:39:03 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:39:03 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/online.php
[Mon May 19 23:36:29 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:36:29 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/misc.php
[Mon May 19 23:32:25 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:32:25 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/
[Mon May 19 23:32:22 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:32:22 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/misc.php
[Mon May 19 23:32:18 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:32:18 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/calendar.php
[Mon May 19 23:32:14 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:32:14 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/jscripts/moo.ajax.js
[Mon May 19 23:32:09 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:32:09 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/boards/stats.php
[Mon May 19 23:26:30 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:26:30 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 23:23:21 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 23:23:21 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:46:22 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 22:46:22 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/settings.php
[Mon May 19 22:46:07 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:46:07 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:44:52 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:44:52 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:43:48 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:43:48 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:35:47 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:35:47 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:26:49 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:26:49 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:26:14 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:26:14 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:23:46 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:23:46 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:23:46 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 22:23:46 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/settings.php
[Mon May 19 22:23:41 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:23:41 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:23:39 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:23:39 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:23:37 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:23:37 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:23:35 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:23:35 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:22:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:22:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:21:09 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:21:09 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:21:02 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:21:02 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:19:26 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:19:26 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/templates/15/overlib.js
[Mon May 19 22:19:25 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:19:25 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/templates/15/styles.css
[Mon May 19 22:18:36 2008] [error] [client 86.123.157.85] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:18:36 2008] [error] [client 86.123.157.85] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:18:10 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:18:10 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/templates/15/tabs.css
[Mon May 19 22:17:22 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:17:22 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:37 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:37 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:31 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 22:16:31 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/settings.php
[Mon May 19 22:16:29 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:29 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:15 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:15 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:12 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 22:16:12 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/settings.php
[Mon May 19 22:16:09 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:09 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:16:05 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:16:05 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:48 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:48 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:47 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:47 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:44 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:44 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:42 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:42 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:41 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:41 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:38 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:38 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:13:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:13:04 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:12:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:12:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:12:36 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:12:36 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:12:29 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:12:29 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:12:03 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:12:03 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:11:06 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:11:06 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:08:39 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:08:39 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 22:08:36 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 22:08:36 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 22:01:35 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 22:01:35 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/robots.txt
[Mon May 19 21:59:43 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:59:43 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 21:57:15 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:57:15 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:47:25 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:47:25 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:47:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:47:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 21:31:32 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:31:32 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:31:29 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:31:29 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:31:27 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:31:27 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:31:18 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/500.shtml
[Mon May 19 21:31:18 2008] [error] [client 67.187.5.164] Premature end of script headers: /home/ricardo/public_html/boards/admin/index.php
[Mon May 19 21:21:25 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:21:25 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 21:08:35 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:08:35 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/video_tutorials/tutorial_29_deleting_an_email_alias.htm
[Mon May 19 21:01:14 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:01:14 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 21:00:11 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 21:00:11 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 19:43:05 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 19:43:05 2008] [error] [client 66.249.72.168] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:37:01 2008] [error] [client 86.123.157.85] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:37:01 2008] [error] [client 86.123.157.85] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:36:59 2008] [error] [client 86.123.157.85] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:36:59 2008] [error] [client 86.123.157.85] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 18:14:27 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:14:27 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:12:27 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:12:27 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:12:09 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:12:09 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:09:56 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:09:56 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:09:45 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:09:45 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:08:12 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:08:12 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 18:00:43 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 18:00:43 2008] [error] [client 67.187.5.164] (2)No such file or directory: File does not exist: /home/ricardo/public_html/f/index.php
[Mon May 19 17:37:34 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 17:37:34 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 17:25:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/404.shtml
[Mon May 19 17:25:55 2008] [error] [client 67.187.5.164] File does not exist: /home/ricardo/public_html/favicon.ico
[Mon May 19 14:53:34 2008] [error] [client 66.249.72.168] File does not exist: /home/ricardo/public_html/403.shtml
[Mon May 19 14:53:34 2008] [error] [client 66.249.72.168] attempt to invoke directory as script: /home/ricardo/public_html/cgi-bin

Sounds to me like you need to be asking your host about this issue.

On a very big off chance, try this:
[Wiki: Help:Mod_security] (Broken link, head over to docs.mybb.com instead)

I usually get this error myself when I have a .htaccess file on my host that doesn't work properly.