Impossible to install Lightning, I seem to have the 'open with' value of the Thunderbird xpi file and it is impossible to cancel.

WIndows 7 Pro
When I downloaded Lightning asked me what I wanted to do with the file, the options were open with and save the file, I chose open with, and then Thunderbird.exe now I can not install the add-on, as soon as I double-click it it opens a new email with the add-in on as an attachment. How to get out o mess I created?

Great, great, great! Once you know about the craft, it all works.
Thank you indeed.

Tags: Thunderbird

Similar Questions

Maybe you are looking for