[EagleNick]

If it isn't a default forum and is customized with Modifications and such:

Reupload all the original vB non-image files (except */install/install.php). Make sure you upload these in ASCII format and overwrite the ones on the server. Also be sure to upload the admincp files to whichever directory you have set in your config.php file. Then run 'Suspect File Versions' in Diagnostics to make sure you have all the original files for your version and that none show 'File does not contain expected contents':

Admin CP -> Maintenance -> Diagnostics -> Suspect File Versions


Next, disable your plugins.To temporarily disable the plugin system, edit */includes/config.php and find:

<?php

Add this directly below it:

define('DISABLE_HOOKS', true);