Hi,
I’ve just updated to the latest beta build of 5.1 and I’m getting the following error:
29/03/2015 22:56:23 Error Error connecting to Database: Invalid schema version (found 22, need 23). Please upgrade your database.
Connection to the database is down, and I cannot open up the Database app. Help!
Go to the config app, edit the Database properties, go to the Upgrade tab and perform the schema upgrade.
As usual 
Ah. Never seen that mentioned before. :
Maybe you could add that into the installer as a reminder during the upgrade processes. Just a thought.
Happens once in a while. Has happend 22 times before so far
The installer cannot look into the database, and cannot tell if an upgrade is necessary, unfortunately.
Fare enough. All fixed now. Thank you!