Let's try this again, shall we? Thanks to astute and diligent Bookcase users, I was emailed within hours of posting version 0.10pre1 that once again I had messed up the UI file location. Not only that, but I also failed to include the all-important XSL file for importing Amazon.com data. So I got those two items fixed, and bookcase-0.10pre2 .tar.gz, a.k.a. "broken sunglasses", is now available. I'm pretty sure it won't cause your computer to blow up and smoke like something hideous, but hey, no guarantees.
UPDATE: Bookcase 0.10 is available, so I removed the 0.10pre2 version.