I have a development machine that I have FMS13 installed and testing things out on my Mac Pro with OS X 10.8.5. I also have FMPA12 and FMPA13 on it. I mostly use FMPA13 now, but I had a chance this morning to startup FMPA12 after I had started FMPA13. It balked at me about IWP, but I ignored it since FMS13 does not have IWP and runs WebDirect instead. I found out a little later than the WebDirect had crapped out apparently when I had started FMPA12 while FMPA13 was running. I'm not sure exactly what happened, but I think I'll avoid opening the FMPA12 app anymore on my FMS13 development machine.