I have updated Firefox to version 55, but experienced the error on 54 as well. Visiting https://addons.mozilla.org/en-US/firefox/addon/codesy-io/ displays the message "Not available for your platform" when trying to download codesy. I can manually download the xpi from github and install after disabling xpi signature checking as per #112.
I have updated Firefox to version 55, but experienced the error on 54 as well. Visiting https://addons.mozilla.org/en-US/firefox/addon/codesy-io/ displays the message "Not available for your platform" when trying to download codesy. I can manually download the xpi from github and install after disabling xpi signature checking as per #112.