Well for me P6 appears to work as well as P5 but with new features. Now that can be good or bad. I think its bad sicne there have been plenty of open issue bugs reported to CL that weren't fixed in P6. The render pipeline issue of not reporting bugs is a good one. At least provide a switch we can turn on that creates a log of events so we can trace what mesh or what texture actually locked the system. Also cancel is a complete mystery to me. You're cancelling a render. How hard is that to stop? Why is there a delay of any significance and why a crash when cancelling. The system stops rendering, it dumps the memory it was rendering into then returns. But the fact the renders cannot be absolutely stopped tells me that Poser is losely communicating with Firefly and is not tightly bound to the rendering engine. My disappointment is that certain glaring bugs should have been fixed. P6 still doesn't remember directory paths you visited when loading multiple morphs. Its dialoging system still suffers from focus loss and being able to bring up other dialogs in places you shouldn't. A lot of things that should have easily been fixed but weren't. In all I'd say for the price P6 is worth the upgrade because of the new lights and features. But the simple bug fixes are not costly and should have been fixed. I don't see an excuse for those. Only thing can figure is the original programming staff left and no one knows how to shoe horn open the system to fix it.