Had an interesting bug (Probably not from shapediver but from Rhino): If you have both Rhino 7 and Rhino 8 installed, the Shapediver version in the packagemanager installation folder (AppData\Roaming\McNeel\Rhinoceros\packages\7.0) might create problems with the one from rhino 8 (AppData\Roaming\McNeel\Rhinoceros\packages\8.0)
So make sure to clean up also the Rhino 7 one if using rhino 8