Well, after some more testing I'm sad to say that Vue 4 will not work in Panther. I doubt e-on will address this either as their only interest now probably lies in Vue Pro. For those that are interested, here's the details: I was able to actually get Vue to startup without complaining about the serial number by copying over 2 pref files from /Library/Application Support/. However, Vue crashes right after the splash screen and the loading is done. I imagine it has to do with the new OpenGL as Apple has broken a lot of stuff with it's new OpenGL implimentation. Many games now no longer work either in Panther. So there you have it. I guess I have to wait until I have the $ to buy Vue Pro and hope to god E-on has their sh*t together and has it working in Panther (doubt it). At least a patch within the next 2 years would be good roll eyes. If any Mac user has Vue Pro and gets Panther when it comes out - please let the rest of us know how it works! For now I guess it's back to Terragen and Bryce. Thanks, E.