Last night while I was viewing/deleting picture I got an "ERR99" error. The CF-card light (red) stayed on, and camera "froze". I turned camera off, but the "ERR99" error stayed there and red CF-card light stayed on. PANIC!!! I had to remove my battery to reset (reboot?) camera. I had removed 580EX before it crashed. I did turn off the Speedlite, but did not turn off camera. Will this cause that error? I've tried to find this error on Canon's website - no luck with error definition. No luck anywhere. Any suggestions appreciated.