Proprietary formats are the scourge of the devil. Too bad, this sounded interesting.I concur, I couldn't open it either. I was about to mention saving as an RTF file, though I don't know how much formatting you have in it.
This version should work.
Converted to PDF for your pleasure.
Aha! Yes, a very nice summary indeed. Thank you!Converted to PDF for your pleasure.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.