pligg script page Fix - Page not Displaying - 30minutes work

Hi All, One of my admin page is not showing.. [login to view URL] It appears the url rewite is not working or one file is corrupt. This is a pligg script, everything works but this one page. it was working before then suddenly i get blank page. Probably need to just replace this file. Problem is don't know which page to replace and "...../modify/main/" is a url rewrite. If you have worked with pligg script before or good at troubleshooting then let me know..shouldn't take long to fix. Thanks [login to view URL]