It beeps and says "remove cassette." when I press eject, the door opens but the eject mechanism will not work.

SOURCE: Message reads eject. won't eject

My camera did the exact same thing. I called Canon tech support and they advised to unplug power cord, remove large main battery, and remove smallbackup battery. The small back up battery is under a small door under the main backup battery. With everything disconnected, turn camera to "camera" and then to "vcr" and then to off. Wait a few seconds. Put everything back together and try to eject again. The tech said that resets all the mechanical parts. However, it did not work for me. They now want me to send it to them for a paid repair. I have done some research on the internet and this is a VERY commom problem and it usually costs about $150 to correct via Cannon. Many times the problem occurs again. I am very very frustrated. I pulled my camera out last night to get it ready as my wife is 9months into her pregnancy. Now, I have to send my camera away for 5-9 days. Really really upset.

SOURCE: Canon MV800i tape would not eject.

Put pedalfoot in camera, shake vigorously.

SOURCE: "REMOVE THE CASSETTE" displays when I put in a tape.

Same problem appears on another thread at fixya.com
http://www.fixya.com/support/t260350-tape_acceptance

villagidit posted a solution there that worked for me.

The same problem exists apparently on the ZR200 which is where villagidit found the solution.

Basically all it involves is thumping on the side opposite the display. I tried the thump once with no effect. I gave it two more thumps and the problem went away. Not really a solution. But it was satisfactory for me to be able to get the camcorder working long enough to transfer all my DV video onto DVDR..

Seems something comes loose in these Canon camcorders (presumably a connector of some sort.) There are 10 votes for this solution on the other thread as of 5/19/2008.

SOURCE: Canon Elura 100 won't eject tape

I have been having the similar problem. Try switching the power to off and then eject the tape in the off position. My finally ejected.

SOURCE: Will no longer allow tape to load

if anyone gets an answer please could you post it on the website as i also have the same problem. What have all of you done so far with your camera's?