Okay thanks a lot of this information.. that explains a lot! Though i'm not very happy that I encountered it just when creating the best pic of mine. -Okay, reinstalling Bryce didn't help at all. -It doesn't matter to which earlier save point I return.. the bug will still come when creating something new and then save. And thats weird??? Like all the files are affected. I just hope that if I bring the models I've created to a totally new document I could get rid of this bug. If not... what can be done because even the reinstallation didnt help? I'll be back with this after few days when having more time. Thanks for all who have some clues about this bug. -Antti