Bonjour,
Ok:
Delete them hacks. ALL OF THEM WITH CLEAN FILES. BACKUP YOUR HACKED FILES!!!
or, try this first if you wish:
Set the permissions on your "members" directory and all containing files to 777 (unix)
If that fixes it, keep the hacks. If not, do the first step.
URL? Version? More info. Send me your memberslist.cgi files, last_name.cgi files. in the members directory.
Thanks!