After updating to Adobe Digital Ed 4.5 epub files were disassociated with Adobe

I tried manually associating epub files to Adobe Digital Editions 4.5 (not first time happens to different media files) however this time Adobe Digital Ed 4.5 doesn't appear to be on default associated programs list and even when I manually select and point to Adobe program it refuses to take and save. I am at a loss what to do. Basically Adobe Digital Edition refuses to be put in a list of default programs or to be associated with epub files and Adobe DE doesn't have any options in preference to force epub association of particular media type (like Windows Player does)

I am on Windows 7 and am authorized as administrator.

I tried to download older versions, and they don't work as well anymore

What should I do?