I've just updated my Liberkey under windows 7. During the update process, it says that it "cannot update files in use" and fails so the automatic update of 5 beta to 5 full doesn't work. You must have forgotten to close the main EXE when you wrote the update script as I know you close it during menu upates.

So, I exited LiberKey and applied the update manually, this worked fine.

I love LiberKey, it's nice to use.