I had gotten the (I think) 7100 message with the tape stuck in. After taking the unit apart and removing the tape, I started getting a 3300 message. After tinkering with it, I found with the side of the unit off, and the circuit board removed (same as I did to get the tape out) there was a white plastic piece at the top of the tape transport that was stuck at the top of the mechanism, I used my screwdriver to gently push it in and up. Restarted the camera, and no more errors. I'm sorry if this doesn't explain it very well, but I know nothing about these camera and actually picked this up after getting that err_3300 about 5 years ago, and just on a whim deciding to be a bit more aggressive. In my case, it had something to do with the tape tranport/loading mechanism being partially stuck on it's way back up - which I had to do manually to originally get the tape out. I've been all over the net for a while and haven't seen this solution anywhere, so hopefully it helps someone.