Hello all, apologies for this. We are not sure why this update has affected so many users, but have removed the update now.
If you are affected, currently the only way to solve is to do a factory reset as described here.
We have not been able to reproduce the issue, but believe it may be because the base system was not updated to the latest version before the updated launcher was installed.
If you could tell us which version of the system software you have, that would help us in isolating the problem. Once again apologies and I hope no one further is affected by this bug. We are also looking for any possible solution without having to do a factory reset.