Although System restore is active and set to use max space for restore points It tells me none are valid. So my proble could be larger then it looks, though only poser is not working right (not counting the restore problem) and it only stopped working right after I installed DAZ Studio, very odd to say the least. Atleast it is good to hear that nobody else seems to be having the probem, becaue it is by far the best version os studio ever. i have been recoomending it to most everyone. I have it on my mac too and it is runnig great. It is looking like it was just bad timing that I was using Poser with no problems, stopped and installed Studio (so I could convert some files to studio) and then went to go back to Poser and it would not start anymore, it just crashes when you try to open it.