I have the Rebel XT. I recently purchased the Canon 35mm/f2.0 lens. The 2nd time I used it I got the Err99 message. When I turned it off, it went away, but then came back. So far it's the only lens it's done it on.

I know what it means - Err99 usually appears when the lens doesn't work with the camera; however, I've read some reviews that the XT has an Err99 problem.

Any experience/advice/thoughts? I hope it's not a camera problem, obviously.

Liz