So I had a mediawiki installed on windows with MySQL (running on AWS RDS). I've since moved it to a debian server for various reasons, but I think I've messed up the database because of the different versions of mediawiki I have used.

The windows install was v 1.20alpha (58f390e). The new debian install is v 1.15.5-2squeeze4.

I've tried to update debian but it doesn't find an update, so is this the latest squeeze version?

Everything seems to work ok except adding users. It gives me a database error so I ran php maintenance/update.php which ran some stuff OK but didn't make a difference. I think I've not done the correct approach to this sort of move, does anyone know of a better way of doing it? I still have the old wiki running - but not used - on windows (using the same database) so I could always try this again.