I had the same problem, they emailed me this which worked.
Corrupt file in the library:-
1) Evaluate what file is currently corrupt in the library e.g. are you able to scroll through various files before the box freezes or does it freeze instantly.
2) Press the menu button.
3) Scroll down to set-up and press ok.
4) Scroll down to help and press ok.
5) In the help menu press 1.3.9.7.
6) Scroll down to option 7, Disable Library Video Window, and using the left and right arrow keys set this to YES.
7) Press the library button.
8) Highlight the corrupt file and press the blue button to delete and the then the green button to confirm.
9) After a few seconds the recording will delete and there should no longer be any corrupt files in the library.
10) After exiting the library the library video window should re-appear.
Gemma, March 2009