I just bought the Puigchild compressor and after I installed it (new waves installer as well) it broke my Grand Rhapsody and some other waves plugins.  Also pooched my Slate stuff on Ilok2 which I don't have my waves on at all.  Updated the Ilok2 stuff but there's still a Slate problem.  I did the reset and rescan with Sonar Platinum and it fixed most of the waves stuff, now I have duplicate Grand Rhapsody vstis so I'll have to sort that out manually I guess.