I was testing this very nice and useful plugin and encountered two problems. First one is that it does not load anything in the admin area when I tested it on localhost. I was unable to understand why?
Secondly, when I tested it on a live demo site the backend worked fine. I created a booking calendar, integrated paypal, configured settings, and added the shortcode to a post. But it did not appear on the front end. The only thing I got was a jQuery loading thing but the actual calendar or booking form didn't appear.
I was testing it on Twenty Twelve. I checked and apprantely the plugin loaded jQuery successfully but still the calendar wont show. I can send the plugin author URL of the demo site if they want to take a look.
Thank you for sharing this wonderful plugin.