I also have a problem although in my case the holder moves in and out ok but the top does not open, trapping the tape. The support person sugggested removing the battery for 15 secs. replacing it and retrying. That didn't work. They offered to repair it for $230!(Gulp)
I'll try using a memory stick and hope the camera will release it when required.
I can no longer get my camcorder to close with a tape in it. Any suggestions as to how to free it up?