Foren / Cotonti / Patches / Migration from Seditio 121/125 to Cotonti 0.0.2

my Admin page now works after deleting all the system php files and re uploading them
but i still can't click submit on anything without getting that fatal error.

details from my host

Platform
Type Debian

MySQL Version
MySQL Version 5.0.45

Perl Version
Perl 5.8.8

PHP Version
PHP 5.2.2

I also noticed that on my pages with downloads. The download button says "THIS DOWNLOAD IS ONLY AVAILABLE TO REGISTERED MEMBERS", even though I am logged in as Admin