During our testing, we discovered that in some cases, the database could be damaged. We are not entirely sure of the cause yet, but we suspect that it is because of an internal switch that we enabled in one of the recent beta releases.
We have not received any report of this problem, besides from our own testing, but since the problem, if it happens, is serious enough to require a re-installation, we are releasing beta 22 with the internal switch turned off, which should help alleviate the problem.
The new version has been pushed out to automatic update service and should reach you presently.
