i even tried puttin the original file back in that came with the vbulletin installation and even that doesnt work.... im not sure wut our issue culd be

anyone have any suggestions?
--------------- Added [DATE]1240610308[/DATE] at [TIME]1240610308[/TIME] ---------------
Ok i disabled our Plugin accelerator hack and the new error upon registration is this
Fatal error: Call to a member function on a non-object in /home/hoodlege/public_html/forums/includes/class_dm_user.php(2906) : eval()'d code on line 1
hmmm...maybe its this plugin accelerator that is doin this...but this is the only thing that keeps our server load down...does anyone have any suggestiosn on this matter?