Can't open acsm file

I can't open acsm file from google book, when i try to open using the abode digital it pops up user account control and ask if i want to make changes in my computer and when I click yes, it re-downloads adobe digital again and does not open acsm file. I tried reinstalling ADE and even tried using older versions, but none seems to work. 

Also when I tried to open the files with ADE "Add to library" feature, downloaded books do not appear.