have trouble downloading ebook to kobo using adobe digital 3

I am having trouble downloading ebooks to my Adobe Digital edition 3.  I'm on a PC it does not matter what I try to download either from local library web site or I even try the how to on the adobe web site and I get the same message. Which is Adobe Reader could not open URLLink.acsm because either not a supported file type or because the file as been damaged. (example it was sent as an email attachment and wasn't correctly decoded)  - However I can download the ebook at the local library then transfer them to my Kobo Glo reader