I can't remember, but in the Vue directory, there may be a file called poser.something_or_other that gets put there after you show Vue where to find it. If there is one, see if deleting it helps. If that doesn't work, you might try reading any .cfg and/or .inf files you find to see if that's where it's stored. After that, I'd check the registry, and if there's nothing there that can be corrected with the proper path to poser.exe (In the Poser 4 directory), maybe uninstall and then reinstall Vue. Wish I could help more, but I'm not at home on my PC where Vue is. Good luck!