I've installed and repaired Adobe Digital Editions several times, and still cannot download a book from Open Library. I finally was able to borrow one for which I was on hold, and now I lost the opportunity because my time window expired. Anyone else consistently have this problem? And found a fix?
I found a remedy to my problem on another website. I needed to change my default program from Adobe Reader to ADE for .acsm and epub files, Once I took care of that via control panel, I could download a book.