Make sure you have the Bryce 4 CD it will ask you for it.and if you don't have the CD you will have to re-install Bryce just to get version 4 back up and running. If you have the Cd it will be non-problematic. there is a new shader for the volumetric materials to get rid of the "outline" of the object it's applied to . some import and export upgrades. and new noise settings in the DTE just to name a few things. Read the read me file at MC's site and the new volumetric materials are a seperate download , they're not included with the patch. Hawkfyr

“The fact that no one understands you…Doesn’t make you an artist.”