As silly as it may sound, try restarting your computer and then re-launching the game. That has worked in a lot of cases. Let me know if this doesn't help.
Right now only the Steam version has been updated from the 1.11 version to the 1.12 version. You should have access to the steam version if you bought the game. If one more person requests that the DRM-free version be updated as well, I'll update it.
