Scott, Vue 4.1.2 hangs on my Mac from time to time as well, but it never locked the whole machine. What OSX are you running? Mine is 10.2.6 If Vue hangs I just kill this process and restart Vue. @Guitta: I first thought of contacting e-on, but I was not very shure if I get honest answers. Just remember the box of Vue4 saying the Poser import worked on a mac which wasn't true in the very beginning when I bough it. ;) Phil