A couple of years ago I had a problem with saved booleans exploding when I brought the files up again (in Bryce 3.0). Then it stopped doing it and the program worked perfectly for a long time. Recently though, I had a terrain become distorted after saving and reopening. Someone told me that the patch (available on Brycetech's site) cures this problem. I haven't been brycing lately, so haven't tested it yet. It is curious that it only does this very rarely, apparently. Odd. -Robert