When I am trying to open an ebook that I downloaded from Northern California Digital Library (.acsm file) I get an error: Sorry, the file you are attempting to open cannot be opened by Adobe Digital Editions
Adobe has a page: http://kb2.adobe.com/cps/408/kb408910.html
saying that this is probably a version mismatch and suggesting to "Contact the web site (eBook store or library) from which the eBook was downloaded or purchased."
But how do people view the ebooks from Nor Cal library? Should I find the older version of Adobe DE? What is the practical solution for me?