If you shut down in the middle of an install, then you hard crashed your computer basically. Sometimes data can be corrupted or lost under those circumstances, but usually not so bad that a Safe Boot won't get you in there to do a bit of cleanup after yourself and get your machine back in working order. Never follow the advice of the Computer manufacturer's tech boys... they ALWAYS will advise you to reinstall it all, since that is the fastest way to get you off the phone, and move on to their next customer, and thus make their quota per day and hold their jobs. I no longer even call them anymore, I do my own tech work, and no longer wind up in your situation. Get yourself Norton Utilities, begin to use it faithfully, to defrag, scandisk, etc and there is a good chance Norton's backups can pull you out of trouble too. I beta tested Stephanie, and have had every version of her down the pike, and she has not even caused my machine to hiccup once, except when I attempted to load in the high res bum files into Poser 4. That was easily resolved though by lowering the resolution of them.