Forum error message when making a post
 

I am getting the following error message whenever try to post. Funn thing is the post does appear on the forum even after this error message;

Warning: require_once([path]/includes/vba_cmps_plugin_newpost.php) [function.require-once]: failed to open stream: No such file or directory in [path]/includes/functions_newpost.php(643) : eval()'d code on line 1

Fatal error: require_once() [function.require]: Failed opening required '/home/xxxx/public_html/forum/includes/vba_cmps_plugin_newpost.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/xxxx/public_html/forum/includes/functions_newpost.php(643) : eval()'d code on line 1