How mant pages does the file contain? Are there a lot of live effects? What is the saved file size of the document? You would be surprised at how quickly the file sizes build up and eat up available RAM and processor capability.
The file is not that large. I am working on windows 7 64 bit. I have 6 gigs of ram. I even took about 4 images an pasted into a single page and got the same error. I seem to see this complaint in other places. Does anyone have a fix?