I have Mac OS 10.6.2 (Snow Leopard) and Firefox 3.5.5, and can't use the Bookit plugin. There are two issues.
1. Preferences window for Bookit is not entirely visible...part of the window is chopped away (see image.)
2. Any time I try to get the plugin to make a file, Firefox crashes.
I should mention I've been trying to do the Mobi format.
Here's hoping there's a solution...boy do I miss Bookit!! :-)
Dane
UPDATE: I can now attempt book creation without crashing Firefox, after going into Calibre advanced and setting up command line tools...so we're closer! However attempts end in the following error...