I had this problem or something very similar.  You have corrupt images 
most likely.  There is a command, which I forget the name of, check 
google/etc, it will go through all of your images on disk and move them to 
an old/ or bad/ folder, once the crap images have been removed, the 
catalog backup should run successfully.

I had the same problem, once I got rid of these images, it worked with no 
problems.

Justin.

On Fri, 2 Feb 2007, Barber, Layne Mr CTR US DISA CDM2 wrote:

> Just upgraded from 5.1 mp5 to 6.0 mp4. The only problem I have is the
> hot backup of the catalog. When I run it, it errors out with status 233
> premature eof encountered. The cold backup works fine. I have searched
> the KB and there is nothing related to this for 6.0 only pre 6.0.
>
> Any ideas?
>
> Thank You,
>
> Layne Barber
> MCSE CNE CompTIA A+ Security+
> Systems Analyst II
> Unisys Corp.
> DISA Montgomery
>
>