Fix the memberfire script on 2 websites

I use the MemberFire membership script on several of my websites, but it seems to have become corrupt on 2 of my sites. Here are the messages I'm getting: 1. Login page for [login to view URL] Warning: main(/home/business/public_html/classes/[login to view URL]) [[login to view URL]]: failed to open stream: No such file or directory in /home/business/public_html/includes/[login to view URL] on line 0 Warning: main() [[login to view URL]]: Failed opening '/home/business/public_html/classes/[login to view URL]' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/business/public_html/includes/[login to view URL] on line 0 Fatal error: Class 'factoryclass' not found in /home/business/public_html/includes/[login to view URL] on line 0 2. During the sign up process at [login to view URL] <[login to view URL]> Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, <webmaster@[login to view URL]> and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. -------------------------------------------------------------------------------- Apache/1.3.41 Server at [login to view URL] Port 80 I need both scripts fixed right away.