Hi folks
I did a semi-automatic update of the site software yesterday and did not notice at the end of the update that there was the need to "OK" a database update. I guess that was the problem.
I have now reinstalled the latest version manually and preformed the database update.
I believe it is now resolved.
Please note that even if you can't login files previously uploaded are still visible in the forum because of the direct link..
If anyone is having problems reply to this thread or send me a mail or a PM.
I will check back here in a couple of hours and again later.