I did not know that I could drag layers to a new mxd. How would I do that? I think that link you provided is on to something. Someone on there mentioned that ArcGIS sometimes has trouble with large maps, so I tried zooming in from 1:35000 to 1:10000. ArcGIS responded with an error message that one or more layers failed to draw. I had seen that error message previously when I was tinkering around with settings, but it seemed to go away when I re-opened the original document. Now, I find that as long as I stay at 1:35000, the screen image looks fine, but the more I zoom in, the more errors ArcGIS generates. I also found yesterday that when I tried doing a test print, only the left quarter of the page actually printed, and it printed in portrait when it should have printed in landscape.
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