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Loading unpacked extensions doesn't work Firefox

"This addon could not be installed because it appears to be corrupt"

I am getting the above error from installing an unpacked extension. I just unpacked the extension using Winrar and then just dragged the folder to the Firefox addon/extension page.

Plus Zipping it to addon.xpi doesn't work either.

My Goal :I am editing an extension to fit my needs and it doesn't seem to work.

I presume Firefox has some kindoff signing or something, how can I disable this or edit the extension to meet the requirements.

I am running 58.0 (64-bit)

The extension has the following error when loading using debugging (Mozilla about:debugging)

Both the edited.xpi and original.xpi have the error. (However the edited.xpi loads thru the load temporary extension but does not load for the dragging method. )

Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
Reading manifest: Error processing permissions.4: Value "identity.email" must either: must either [must either [be one of ["clipboardRead", "clipboardWrite", "geolocation", "idle", "notifications"], be one of ["bookmarks"], be one of ["find"], be one of ["history"], be one of ["activeTab", "tabs"], be one of ["browserSettings"], be one of ["cookies"], be one of ["topSites"], be one of ["webNavigation"], or be one of ["webRequest", "webRequestBlocking"]], be one of ["alarms", "mozillaAddons", "storage", "unlimitedStorage"], be one of ["browsingData"], be one of ["devtools"], be one of ["identity"], be one of ["menus", "contextMenus"], be one of ["pkcs11"], be one of ["geckoProfiler"], be one of ["sessions"], be one of ["contextualIdentities"], be one of ["downloads", "downloads.open"], be one of ["management"], be one of ["privacy"], be one of ["proxy"], be one of ["nativeMessaging"], be one of ["theme"], or match the pattern /^experiments(\.\w+)+$/], or must either [be one of ["<all_urls>"], match the pattern /^(https?|wss?|file|ftp|\*):\/\/(\*|\*\.[^*/]+|[^*/]+)\/.*$/, or match the pattern /^file:\/\/\/.*$/]
Reading manifest: Error processing oauth2: An unexpected property was found in the WebExtension manifest.
Reading manifest: Error processing options_page: An unexpected property was found in the WebExtension manifest.

Here is the error from the Browser console:

          1516983623806 addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
1516983623811   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing permissions.4: Value "identity.email" must either: must either [must either [be one of ["clipboardRead", "clipboardWrite", "geolocation", "idle", "notifications"], be one of ["bookmarks"], be one of ["find"], be one of ["history"], be one of ["activeTab", "tabs"], be one of ["browserSettings"], be one of ["cookies"], be one of ["topSites"], be one of ["webNavigation"], or be one of ["webRequest", "webRequestBlocking"]], be one of ["alarms", "mozillaAddons", "storage", "unlimitedStorage"], be one of ["browsingData"], be one of ["devtools"], be one of ["identity"], be one of ["menus", "contextMenus"], be one of ["pkcs11"], be one of ["geckoProfiler"], be one of ["sessions"], be one of ["contextualIdentities"], be one of ["downloads", "downloads.open"], be one of ["management"], be one of ["privacy"], be one of ["proxy"], be one of ["nativeMessaging"], be one of ["theme"], or match the pattern /^experiments(\.\w+)+$/], or must either [be one of ["<all_urls>"], match the pattern /^(https?|wss?|file|ftp|\*):\/\/(\*|\*\.[^*/]+|[^*/]+)\/.*$/, or match the pattern /^file:\/\/\/.*$/]
1516983623812   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing oauth2: An unexpected property was found in the WebExtension manifest.
1516983623812   addons.webextension.<unknown>   WARN    Loading extension 'null': Reading manifest: Error processing options_page: An unexpected property was found in the WebExtension manifest.
1516983623816   addons.xpi  WARN    Please specify whether you want browser_style or not in your options_ui options.
1516983623829   addons.xpi  WARN    Add-on {487609b5-5ca6-4c62-8523-11f3e1db851c} is not correctly signed.
1516983623830   addons.xpi  WARN    Add-on {487609b5-5ca6-4c62-8523-11f3e1db851c} is not correctly signed.
1516983623830   addons.xpi  WARN    Invalid XPI: signature verification failed

Hope fully there is a solution that accomodates intalling the extension without installing through the temporary method.

Solution
    • Look in the Browser Console (not Web Console) for errors related to the addon you have loaded.
    • Have you tried using about:debugging?
    • In Firefox Nightly, you can disable the signing by setting xpinstall.signatures.required to false in about:config. On other builds this has no effect for security reasons.