Bryce is not Large Address Aware, which means the flag was not set at compile time. However, it can set using one of the free tools available. Bryce can then go to about 3.2 to 3.5 GB. Here's a video that may be of help [http://www.youtube.com/watch?v=UDZmETVO15c] Bryce Memory Shortage – and what you can do about it. I've tested from Bryce 4 upwards to 7.1.