Use windows XP 32 bit. Dual core processor with 4g ram.Cameraraw opens Canon CR2 files from 1DmkIII, but not 5D mkII. Worked for about a month and stopped. Reloaded photoshop CS4 and loaded 5.5 update for Cameraraw. Still does not work, Have Creative Suite 4 Web Premium on computer. Do I delete all the Adobe programs and start over? If so, do i remove the registration from computer?
Thanks Jeff, followed your advice. Manually loaded 5.7 Raw update. It did work. I just needed to purge the cache. then the raw files opened. Thanks you very much.