It's very difficult to respond when you post the same thing in multiple threads. 8-)

I suggested in another thread (now I can't remember which) that part of your problem might be that the Poser uninstaller leaves traces in the registry that might be the reason you are getting those errors.

I suggest uninstalling with something like Revo Uninstaller (paid) or Geek Uninstaller (free) to clean out the registry, and hopefully that will get you past this. Geek Uninstaller actually works pretty well, and hopefully you will be allowed to install Poser as if it has never been installed. Keep your serial number handy 8-)