I'm on a mac, and bryce 6 is a lot more stable than bryce 5.5. The annoying thing is that all the presets come separately, and as seeing that I have not installed" them all yet, which is lame, certain parts of bryce are missing (i.e. source textures, tree presets). This is easily fixable, but I can't be bothered right now, But I've only had one crash and it's not reproducible thus far. And the WORST bug in 5.5 on the mac was that there was a 70% chance of crashing if you used the select by family tool. It works fine in BR6. Lovin it, cost me $35 (29 for platinum membership which I've already cancelled rebill for, $6 for bryce 6) Which is about how much I'd spend on a nice dinner. Excpet it SAVES me money because I won;t go to a nice dinner becaue I'm playing with bryce :D