I installed vegas pro release 11.0.521 three days ago.
There is something seriously wrong with the rotation when using pan & crop it skips & zooms eradically. I would highly recommend doing a restore point before the install, if you have the same issue you will want to restore. Release 11.0.425 does not contain the same issue. So far I have not been able to load a 11.0.521 project into the restored 11.0.425 verson… and that is a very BAD thing, thanks Sony.