Well I managed to upgrade since I'm your little tester
and it don't work.
After making my selections I click start and it just comes up "Encoding finished, hoped it worked" like the usual after a good hour or longer to rip a dvd.
So I thought maybe I should reinstall lsdvd as well. That didn't work. So I uninstalled and reinstalled 0.5. Works fine.
I didn't catch any errors in the logs but I started ripping a movie with 0.5 and will wait til its finished so I can try again with 0.6 to see if I can't generate any errors. But don't think it will since it says its finished right when you click start.