I have to say I've never come across the 'bad obj' problem even on my laptop with only 64MB of RAM. I've had all sorts of other problems, but not that one. My new machine is a 1.4GHz AMD Athlon machine with 512 MB of RAM and that really does zoom along when working with Poser. I've never bothered with Pro Pack, mainly 'cos I couldn't work out what it offered me. Anyone care to explain?