Rated 2 out of 5 stars

yazan: Harold J Drabkin tarih: Eyl. 5, 2008 ·

claims "requires additional items"
But what items?

This review is for a previous version of the add-on (0.1). 

yazan: Philipp Kewisch (Geliştirici) tarih: Eyl. 5, 2008 ·

If you have not been able to use this extension, how do you justify 2 stars? Please use the support contacts, if you require support.

This extension requires a patch pending review in bug 202360, which is also one reason this extension is still experimental. Sorry I haven't noted.