Works pretty well and the icon is now showing. Suggestion: Please allow disabling for specific sites (i.e. YouTube search results within Bing do not work properly).

EDIT: All of the issues have been FIXED! Arlo, you rock! Thank you so much for this great extension and useful companion to myTube!

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I'm having the same problem with the last update. No icon image is shown (has been happening from a few updates back) and the following message appears when clicking the Companion button "Firefox cannot locate the file in moz-extension://c529cfb9-734c-4135-a16d-6ab585a1b209/popup.html.".

The Companion works even with these problems (the MyTube app is opened automatically), but there's no way to toogle the options if the error message appears instead.

Please take a look into this issue Arlo. The add-on is working fine on Edge.

Excelente, muchas gracias por vuestro trabajo