Was hat das hier zu bedeuten (ist etwas anderes als oben)?
MyBB
MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1054 - Unknown column 'u.username' in 'where clause'
Query:
SELECT uid, usergroup, additionalgroups, displaygroup, username FROM lkzlgz_2drj_189_users WHERE LOWER(username)='finn' AND `u`.`username` != '' LIMIT 1

Please contact Forumprofi.de for support.
[/code]