Rated 4 out of 5 stars

Could you please test the freaking updates before going live with them ?
LE: Most of the sssues were quickly fixed (I still cant remove "Add/Subscribe with Reminderfox" from the contextual menu).
(Tom, people could help with testing before you go live with updates, I'm sorry if I was a bit harsh but I used this add-on for a long time and it was really frustrating to see this happening.)

This review is for a previous version of the add-on (2.1.4.1-signed). 

Sorry - I'm only one man!!!
Apologies for the troubles. Please try the latest update which has resolved these issues:
https://addons.mozilla.org/en-US/firefox/addon/reminderfox/versions/2.1.4.1