hi guys/gals the patch has a different gamma (or possibly contrast) setting for the interface. You lose the advanced display modes. You lose about 10% render time, and the mac problem described at the top is either an OS invalidity problem or the code is incorrect. Meaning it doesnt work on versions below 8.5 even tho its says it will work on mac 7.5 and up. love the new mapping modes! The images are slightly crisper in tone. Stablility is the same as the earlier version...Ive seen some of the light w/ gradient renders..they rock! Didnt really see any difference in the starmodes. all in all, its ok, but the losses are probably not worth the upgrade for most...I did encounter several problems with the upgrade which I also found the workaround to. I reviewed this for everyone (including screen shots) for those that were afraid to load it. Its on the index page of my site. http://www.brycetech.com/ :) Brycetech