562951 - Unable to install Greasemonkey userscripts - Components.classes['@mozilla.org/extensions/manager;1'] is undefined

Status: RESOLVED DUPLICATE of bug 566072

(Firefox :: Extension Compatibility, defect)

Description

[Brian Carpenter [:geeknik]]

The latest nightly build of Minefield shows that Greasemonkey is installed and active, Greasemonkey shows it's icon in the status bar and looks active, however, none of my userscripts are installed and when I try to install a new userscript, I get this error:

Script could not be installed TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined

Comment 1

[Brian Carpenter [:geeknik]]

Workaround posted on http://forums.mozillazine.org/viewtopic.php?f=23&t=1875945:



In file extensions/{e4a8a97b-f2ed-450b-b12d-ee082ba24781}/content/config.js, around line 410 (search for "@mozilla.org/extensions/manager"), and replace the 4 lines (should be the same as the first 4 lines here only it's been commented) with the stuff below:

Code: Select all
            /*var extMan = Components.classes["@mozilla.org/extensions/manager;1"]
              .getService(Components.interfaces.nsIExtensionManager);
            var item = extMan.getItemForID(GM_GUID);
            GM_prefRoot.setValue("version", item.version);*/
            Components.utils.import("resource://gre/modules/AddonManager.jsm");

            AddonManager.getAddonByID("{e4a8a97b-f2ed-450b-b12d-ee082ba24781}", function(addon) {
               GM_prefRoot.setValue("version", addon.version)
            });

Comment 2

[Tanner M. Young [:tmyoung]]

Seeing it also on Vista, and it has broken Jetpack in addition to Greasemonkey.

Comment 3

[Tanner M. Young [:tmyoung]]

This would be fixed by Bug 563412.