Yesterday I picked up my 7D with the Sigma 30mm and decided to take a few snaps of the dog, and wham, after about 3 shots, I get the ERR 30 message. I followed the directions and removed the battery (and the little button battery as well) and even swapped batteries (to a fresh one) and put a different lens on. 3 or so clicks, boom, ERR 30. I've only had the camera since mid November, so there are only about 3k clicks, so I'm a little upset by this. I've searched the forum but didn't come up with a whole lot of people who've encountered this issue with a camera with relatively few actuations. I'll be getting in contact with Canon today to figure out what to do. Anyone with any advice? Kind words to make me feel better? LOL.



