MyBB Community Forums

hello, i have a error when i want to delete posts or threats this is what it says

Sorry, but you did not select any posts to perform inline moderation on, or your previous moderation session has expired (Automatically after 1 hour of inactivity). Please select some posts and try again.

and i think my headerinclude should be fine, i hope semone can help me with this. thanks!

<link rel="alternate" type="application/rss+xml" title="{$lang->latest_threads} (RSS 2.0)" href="{$mybb->settings['bburl']}/syndication.php" />
<link rel="alternate" type="application/atom+xml" title="{$lang->latest_threads} (Atom 1.0)" href="{$mybb->settings['bburl']}/syndication.php?type=atom1.0" />
<meta http-equiv="Content-Type" content="text/html; charset={$charset}" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/prototype.js?ver=1603"></script>
<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/general.js?ver=1603"></script>
<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/popup_menu.js?ver=1600"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">jQuery.noConflict();</script>
<script type="text/javascript">if(typeof jQuery=='undefined')
{document.write(unescape("%3Cscript src='images/df/js/jquery-1.8.1.min.js' type='text/javascript'%3E%3C/script%3E"));}</script>
<script type="text/javascript" src="images/df/js/df.js"></script>

which theme you are using ? if it is a premium theme then its support should be sought from the theme coder
btw, can we have your forum url

If you are using 1.8 then I advise you to use a 1.8 theme. Your header include is probably loading prototype.js.