Restored OS from Time Machine. Poser11 would not launch. Deleted Poser 11 and reinstalled from DVD. Poser11 launched but would not accept serial numbers saying they had been activated too many times! (Sounds like Adobe ...) Have contacted Smith Micro and now await help and restoration of P11. Was it the latest (SR5) that broke it? No-one else has reported problems with it so far. Found my copy of PP2014 so I at least have that, though I prefer Poser 11.