Rated 5 out of 5 stars

@Michel1325 and @whirled
Thank you a lot to both!

The add-on provided with the link is now working with TB 60.3.1 and Win 7 pro.

Rated 5 out of 5 stars

The add-on isn't working with 60.3.1

I tried myself to modify the files following MaximMakarenko instruction, but when I try to install my packed .xpi I get a message telling that installation file is corrupted.

Any idea how to solve the problem?