All,
I had the same problem when I upgraded to 2004. None of the fixes seemed to help. One was to increase RAM above the 256M I had. Well, I finally got a new computer with a faster processor, a 3.0GHZ with 512M RAM and the file I had problems with now seems to work fine, although I have not had a chance to do more than open it and do a couple of simple tasks. See if this helps.
Tom.