What did you use to delete the demo? I'm assuming you're on a PC, in which case you could have detrius all over the place left over from the uninstall. There are a couple of really good programs out there that search for "orphans" and delete them. You might want to check into that just to make sure. Also -- and perhaps the Poser Technical page might be the better place to ask this -- is it possible the demo re-wrote some of the coding in some of your Poser files, even with the save-disabled function? Frankly, I don't know much about PCs and how the PP works, but it strikes me as a possibility.