Real well known problem.
To avoid causing the problem most (but not all) of the time, load Bryce to an empty scene and then use only the Open/Save command from the OS menu.
I've been able to fix this problem, again most of the time, by running Apple's Disk Utilities and have it Repair Permissions and then restart my Mac.
You can also copy the file to a CD and load it from that and it's been mentioned that moving it to a new Volume ( like a secondary HD or Flash Drive) also fixes the file. I haven't tested this yet.

Files like these also load fine onto a PC.
HTH;
Dan

Message edited on: 11/23/2005 19:25

Message edited on: 11/23/2005 19:26