Awesome! Rated 5 out of 5 stars

Edit: Fixed after talking with the developer! Yay! Works seamlessly and reliably, great add-on!

This review is for a previous version of the add-on (1.5.0.1-signed). 

Hey, please check your private message on Last.fm and let me know if those were the issues causing it. If yes, then those are explicitly stated in the "About this add-on" section, so you might consider re-rating. :) Thanks!