Capt W, I followed your link and got the same result as you seemed to get. This is probably a problem at the source and nothing to do with the presence or non-presence of Adobe Acro Reader on your PC. I have Ver 4.0 and it works a treat normally, but I couldn't download and save to disk the JAA documents.
Suggest you check this out with CAA using their "contact us" link if they have one.