Yeah, after release, before we do an update, we'll send out a warning to everyone - so people can either make a copy of the local files for the version of their game, or start from scratch.
Gimme a bit, though, to figure out how I can restore the BETA version to 7.0 for you, though. Some have just started with 8.0, etc... I'm going to try and figure out how to make 7.0 available too.
Bt