Firefly works fine here... G5 dual 1.8GHz 1.25GB RAM GeForce Ultra 5200 FX OS 10.3.5 P5 SR4 You could try the following: 1) patch the firmware on yer box. All of it. 2) Check to see if anything else is conflicting. Turn off everything you can (past the Dock, use top or System Monitor to see what's running, and shut off whatever you can safely shut off) then fire up Poser. "Poser keeping it's files in the Applications folder is a Unix, No no." Err, small addition to that: I've found that if you shove the Runtime elsewhere without making a hard link to it, you run into trouble. I wouldn't use "Add Extra Runtime", but instead just put a link to it in the Poser 5 directory (wanna know how to make a link? Pull up a terminal and type "man ln") /P