hey max and poser must be installed on the same hard drive, and like c:/curiouslabs/poser c:/3dsmax meaning they have to be on the same part on the hard drive, otherwise the installer will not find it and work, and you also must have the right plugin version, I think there's one for max 3/4, but not for five.... hope that helps, btw, once installed you probably will have to correct the installation by getting the files to their places... if you get into that let me know and i'll tell you what to do.... I did that a million times than switch to max five and the plugin don't work.... well back to obj exporting....hehehhehehe