V4 error after V% beta

after installing V5 Beta, I am getting an error when trying to run V4.4.3
'Error connecting to mldb Invalid schema version. will version 4.4.5 cure this?

The database will not work with v4 anymore after the schema has been upgraded. You must use separate database files for v4 and v5. That’s because v5 adds a couple of new tables for the new features (music templates, ad scheduling in the Pro version), and v4 doesn’t know how to handle them.

During schema upgrade, mAirList will usually create a backup file (unless you skipped that step). If the database file is named “database.mldb”, the backup file to look for is “database.mldb.20”, in the same folder. Rename that to “database-mairlist4.mldb” or so, and change the name of the database file in the v4 config accordingly. (You can use the “Open existing file” button.)

thanks Torben