Not working after browser update Rated 5 out of 5 stars

Superb add-on,
but it stopped working in my FF3.6 after a browser update:

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)
TinyURL Generator v.1.0.12

No icon, no context menu.
Where can I start debugging this?

This review is for a previous version of the add-on (1.0.12). 

New Version

Hi Martin,

I have released a new version which should hopefully solve the problems you are experiencing. You made need to login to download it as it is currently being reviewed.