I've been using Final Cut for months with no issue. This morning I tried to launch Compressor and it told my my hardware doesn't meet Final Cut's requirements. Specifically it said I need a graphics card that supports Quartz Extreme. I have an ATI Radeon HD 2600 XT that came with the Mac Pro. What's causing this? Does the card in fact not support Quartz Extreme and a software update for Final Cut made it change its mind about my system? Is the system wrong about my graphics card? Do I really need to upgrade my hardware?