--- toolkit/mozapps/extensions/src/nsExtensionManager.js.in.orig	Tue Jul 27 15:35:12 2004
+++ toolkit/mozapps/extensions/src/nsExtensionManager.js.in	Tue Jul 27 15:36:02 2004
@@ -1568,9 +1568,14 @@
   
   _checkForGlobalInstalls: function (aPath, aItemType)
   {
+    var fPrefix = "file://";
     // First see if the path supplied is a file path
     var file = Components.classes["@mozilla.org/file/local;1"]
                          .createInstance(Components.interfaces.nsILocalFile);
+    if (aPath.substr(0, fPrefix.length) == fPrefix) {
+	// Strip out the file:// prefix if it exists
+	aPath = aPath.substr(fPrefix.length, aPath.length);
+    }
     try {
       file.initWithPath(aPath);
     }