First of all, many thanks to the plugin author for updating this to work with the new Amazon API.
The problem I have is that the moment I add more than eleven instances of the shortcode in a single post, the entire post content disappears (at least when I preview it).
I was writing a multi-review post and it took me ages to work out what was going on. Delete the twelfth instance of shortcode and everything comes back.
Is this a plugin limitation? Or WordPress? Or something to do with the Amazon API?
Any ideas, anyone?