At one point I reinstalled PS3, but now I have the problem again.I often have problems with large format files in PS3. It was working fine, but after a couple of hours it "unexpectedly quit....". I have relaunched, tossed preferences, etc. When I force quit, the PS3 icon in the dock still shows up with the dot and the Force Quit window shows up with no indication that there is a problem. When I try to reboot many times I have to use the power button on the mac. Finally i got PS3 to open...I opened up a different file and it worked fine, but the large format file tried to open and it came up with "Could not complete your request because of a program error." Photoshop locked up. Do my large file formats get corrupted for some reason? I have a MacPro, Dual-Core Intel Xeon, 2.66 GHZ, 2 processors, and 16G B memory...There should not be a memory problem with this machine. Why do I always have problems with a large format file??????