Hey all. My 50D is telling me that the flash I have attached to my camera is "incompatible flash or flash's power is off". Last time I checked my 580 EX II is definitely compatible. Plus, it had been working fine forever and now all of a sudden it's not syncing. It's still firing, but it's not ETTL, or high speed sync. None of the options really work, other than the flash goes off.


Oh, and I'm getting that message when I try to go into my external flash options.


Anyone know what to do?? Thanks a bunch.





John