If you are having trouble with your Adobe Acrobat Reader installation, I would recommend uninstalling it before trying to install the latest version. Adobe doesn't provide an uninstaller for Reader for Mac, so you should just drag it out of your Applications folder into the trash and then install the one version that you want to have again from a fresh download.
What do you mean with "I get a dialog whenever I load the pdf"? Do you mean just this pdf (the Character Sheet)? Or with any pdf? And it is not my welcome message that you are referring to?
Thanks, apparently that was the problem. I don't know why the Adobe site told me that I had the most recent version, but I deleted the application and went to the Adobe site and my old version was indeed old.
It only came up with this sheet, but to be honest I have been using another PDF reader that worked much better than the old Adobe reader I had, so it could very well have been a problem overall, though I suspect, since I wasn't using complex PDFs before yours, that it just couldn't handle the more complex document.
Again, thank you for your help and your fine Character sheet. I believe all will go well from this point on.