Index: modules/addon_utils.py
===================================================================
--- modules/addon_utils.py	(revision 51254)
+++ modules/addon_utils.py	(working copy)
@@ -147,9 +147,12 @@
 
     for path in path_list:
 
-        # force all contrib addons to be 'TESTING'
-        if path.endswith(("addons_contrib", "addons_extern")):
+        if path.endswith("addons_contrib"):
+            # force all contrib addons to be 'TESTING'
             force_support = 'TESTING'
+        elif path.endswith("addons_extern"):
+            # force all extern addons to be 'EXTERN'
+            force_support = "EXTERN"
         else:
             force_support = None
 
@@ -323,7 +326,9 @@
             import traceback
             traceback.print_exc()
     else:
-        print("addon_utils.disable", module_name, "not loaded")
+        if mod: state = "enabled"
+        else:   state = "loaded"
+        print("addon_utils.disable: %s not %s." % (module_name, state))
 
     # could be in more then once, unlikely but better do this just in case.
     addons = _bpy.context.user_preferences.addons
Index: startup/bl_operators/wm.py
===================================================================
--- startup/bl_operators/wm.py	(revision 51243)
+++ startup/bl_operators/wm.py	(working copy)
@@ -1678,7 +1678,8 @@
     target = EnumProperty(
             name="Target Path",
             items=(('DEFAULT', "Default", ""),
-                   ('PREFS', "User Prefs", "")),
+                   ('PREFS', "User Prefs", ""),
+                   ('EXTERN', "User addons (extern)", ""),),
             )
 
     filepath = StringProperty(
@@ -1725,6 +1726,8 @@
         if self.target == 'DEFAULT':
             # don't use bpy.utils.script_paths("addons") because we may not be able to write to it.
             path_addons = bpy.utils.user_resource('SCRIPTS', "addons", create=True)
+        elif self.target == 'EXTERN':
+            path_addons = bpy.utils.user_resource('SCRIPTS', "addons_extern", create=True)
         else:
             path_addons = bpy.context.user_preferences.filepaths.script_directory
             if path_addons:
Index: startup/bl_ui/__init__.py
===================================================================
--- startup/bl_ui/__init__.py	(revision 51243)
+++ startup/bl_ui/__init__.py	(working copy)
@@ -120,6 +120,7 @@
             items=[('OFFICIAL', "Official", "Officially supported"),
                    ('COMMUNITY', "Community", "Maintained by community developers"),
                    ('TESTING', "Testing", "Newly contributed scripts (excluded from release builds)"),
+                   ('EXTERN', "Extern", "Scripts downloaded from other sources"),
                    ],
             name="Support",
             description="Display support level",
Index: startup/bl_ui/space_userpref.py
===================================================================
--- startup/bl_ui/space_userpref.py	(revision 51243)
+++ startup/bl_ui/space_userpref.py	(working copy)
@@ -1002,6 +1002,7 @@
         'OFFICIAL': 'FILE_BLEND',
         'COMMUNITY': 'POSE_DATA',
         'TESTING': 'MOD_EXPLODE',
+        'EXTERN': 'URL',
         }
 
     @classmethod