I have a EOS 30 D that reads ERR 99...Shooting is not possible....I can get about a dozen more shots after I remove and put the battery back in, then the ERR 99 reappears...I have original Canon batteries....Any ideas of what to do....Thanks!Bill
Thanks Cicopo.....I am experienceing this with several batteries, but all are several years old...would it help to purchase a new battery?Also, I use only Canon lenses per the article you provided...thanks again....
