Hi, since this is an add-on specific question, it would be better if you submitted it in the add-ons forum https://discourse.mozilla-community.org/c/add-ons

Hi   !

You need to get your add-on signed   -   see :

https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox

and also :

https://developer.mozilla.org/en-US/Add-ons/Distribution

@Scribe: OK, I'll try to post the question in the add-on forum.

@Happy112: It is an add-on already approved and signed by Mozilla (see the link to the add-on) and according to your link

• "Mozilla verifies and "signs" add-ons that follow a set of security guidelines. All add-ons hosted on addons.mozilla.org undergo this process in order to be signed."

So as far as I can see the add-on is correctly signed. Do you see anything else?

The extension is signed correctly and should install without problems.

• https://addons.mozilla.org/en-US/firefox/addon/recipefox/

Users can try to rename/remove the extensions.json file in the profile folder to see if that works. Also make sure that Firefox can connect to the Add-ons server to verify that the extension is still signed correctly (don't what URL Firefox uses).

mera461 said

@Happy112: So as far as I can see the add-on is correctly signed. Do you see anything else?

All I can see is : I goofed - big time  ! And I apologise.

Looking again at your add-on, I see that it requires Java to work. However Java has been deprecated from FF52, so that may be causing the problem - Why do Java, Silverlight, Adobe Acrobat and other plugins no longer work?

It used to depend on java, but from version 0.93 it no longer uses any java. I'll update the description to match that.

See also:

• https://wiki.mozilla.org/Addons/Extension_Signing