I have installed the porpack plugin for 3d max 3.1, and when I load a pz3 file , a square appear in the scene. I read the user guild and it said an instances should be make before working. So I click the create button in the keyboard entry panels, then 3d max crashed and closed. I think I done something wrong, can anyone tells me what I did wrong? How can I work a pz3 file in 3d max?