When posting on a board i get this error:

Warning: File("http://sweetleaf.cc/wwwthreads/filters/usertitles") - Error 0 in /home/sweetle/public_html/wwwthreads/addpost.php on line 645

Warning: Variable passed to each() is not an array or object in /home/sweetle/public_html/wwwthreads/addpost.php on line 646

After this error, the refreshed board loads up, and the new topic is on the board. Everything is seemingly fine.

This is a bug that will be fixed with the next release. It only happens on certain systems. Not everyone needs to make this change, but you can take a look at this thread to see how others are fixing this problem.