does your config.php contain the correct data?
It exists but has nothing in it. It is located directly in the main phpBB folder -not in a sub-folder. It looks exactly as it was when originally uploaded. The permission reads -rw-r--r-- and I expect that it was never changed. Maybe thats my problem.
So I've uploaded install.php again because I think that I should try to reinstall again but this error appears.
An error occurred trying to update the database
Table 'phpbb_auth_access' already exists
I read article 48 but havn't done that yet because I'm not sure thats the problem.