I don't really know what the problem is. Did you attempt to load Poser 6 into the same location as PoserPro?? I had Poser 4 and along came Poser 5. Installed Poser 5 in it's own directory. I could use Poser 4 as and External Runtime of Poser 5. I installed Poser 6 in it's own directory. I can use both Poser 4 and Poser 5 as External Runtimes. Cheers DR

"That government is best which governs the least, because its people discipline themselves."
Thomas Jefferson