Well, now I really screwed up. I updated to 0.92.99.7-testing, old database was deleted, and now armory keeps crashing as soon as it starts building databases, I tried like 6 times 
How did you delete the old DB? Within Armory? Or manually deleted the folder? I just realized we probably haven't had much testing of the wipe-old-databases-and-rebuild process. A log file through our support channel would be great.
@doug_armory: can you test this in OSX? Based on another report from earlier, this might be OSX-specific.