I have recently purchased a 4 GB Sandisk Ultra II CF card. When I first purchased it I was getting some flicker in the photos when I opened them in photoshop. Well I updated the firmware which was supposed to take care of commmunication with some CF cards. This did take care of the flicker. However, tonight we were shooting stars through my buddies telescope when I got an err 01. I removed the CF card and reseated it and the error went away. Do I have a bad CF card?

