NatCh: Thanks for the help. I'm embarrassed to say that I never thought of just loading it in a different format. I may give that a try and see what luck I have. BookDesigner is another good thought for a workaround, though I like the first idea better. Overall, thanks muchly.
Thing: That's interesting that you say the book eventually opened. I'd actually considered the possibility that it might be moving very slowly, but I waited 10-15 minutes, and figured it couldn't possibly be longer than that. Little did I know. As to your speculation regarding the cause, I'm afraid I can't back up your theory. The book I'm trying to view has very few links (the only ones I'm aware of being the 15ish chapter table of contents) and no footnotes or other oddities whatsoever. It's just a typical novel. 0.4 mb in size.
Anyway, thanks to you both. I expect one of the workarounds NatCh suggested will probably do the trick, but if anyone else happens upon this thread with new ideas, I'm still very interested, and plan to continue watching this space. So don't hesitate to post. Thanks!