If you have a current membership you could just do an install of the new version 7.5.6p2 (with patch 2) then bring your DB from your broken board over... it would mean you would have to do some of your customizations again that way.... But I am not sure the upgrade script would work if your other board is giving syntax errors... I would actually just try to run the upgrade script first but wait until SD or one of the other guys gives a better answer.

Dunny