Thread:Project:Support desk/This Wiki uses cookies to log in users.../reply (6)

The relevant error seems to be

Warning: session_regenerate_id: Cannot regenerate session id - headers already sent in ...

The problem is that output has already started before that point (which should not happen). Check LocalSettings.php line 2. It seems like this returns something, which it should not do. Maybe there is some code, or a UTF-8 BOM at the start of the file (an editor like Notepad++ might add that silently in files you edited). Make sure that the file starts with "<?php" and that the encoding is UTF-8 without BOM.