MyBB Community Forums

So I wanted to change the url from /forums/ to /forum/ and I edited it first in the general cfg before changing the folder name but I am getting this error

Warning: require_once(/usr/www/fuzionweb/public/forums/inc/init.php): failed to open stream: No such file or directory in /usr/www/fuzionweb/public/forums/admin/index.php on line 18


Fatal error: require_once(): Failed opening required '/usr/www/fuzionweb/public/forums/inc/init.php' (include_path='.:/usr/share/php5:/usr/share/php') in /usr/www/fuzionweb/public/forums/admin/index.php on line 18


Can someone help me fix this