Adobe Digital Editions crashing on OS X 10.10 when trying to load an ebook with a .acsm extension

I have a Nook that I bought to download books from the local library. However, Adobe Editions crashes every time I download a book with an extension of .acsm and attempt to load it into the library. I've sent the crash reports to Apple, but I suspect that it's not an Apple issue, per se, but a problem with Digital Editions. I'm patched to the current patch levels of OS X and I've tried uninstalling and reinstalling Digital Editions with no success.

Has anyone else had this issue, and if so, how did you work around it?

Thanks!