I have developed an add-on just for myself. I zip the files into an extension called SH4ALL.zip. The name in the manifest.json file is SH4ALL. I then use the “Manage Your Extensions” UI to test it with “Debug Add-ons”. It loads correctly and it tests correctly. I then remove the extension.
I then quit firefox. I go back into the “Manage Your Extensions” UI to install it with “Install Add-on From File…” and I get this message
This add-on could not be installed because it appears to
I even changed .zip to .xpi and received the same message.
what am I missing?
does an extension I created only for myself still need to be signed?