I think I received the same set of disks the other day. Try scrolling to the bottom of the page and hit "continue"; it worked for me. Once I got to the library, and the section that I needed, it pulled up Adobe and came on the screen as a pdf. We have all the latest updates on all of the programs; I think this "plugin" crap is probably just another of Bill Gates & Co's nasty little tricks.

Good luck,
Jim

PS We are also running Mozilla