Yes I have the latest 4.0.1 SR. I ended up getting ahold of techsupport at curious labs, but got their usual uninstall and reinstall advice. I was able to turn-off, actually prevent norton from starting to see if it was the culprit, but poser still won't run. I configured my computer to run with only what it needed, and disabled all services that werent microsoft. That didn't work. Then I did the exact opposite, and turned everything on in case poser relied on another program, and that didn't work either.