diff --git a/r2/r2/controllers/validator/validator.py b/r2/r2/controllers/validator/validator.py
index 2139ed19a..0543bf48b 100644
--- a/r2/r2/controllers/validator/validator.py
+++ b/r2/r2/controllers/validator/validator.py
@@ -296,7 +296,10 @@ class VUser(Validator):
         if not c.user_is_loggedin:
             #TODO return a real error page
             d = dict(dest=reddit_link(request.path, url = True) + utils.query_string(request.GET))
-            return redirect_to("/login" + utils.query_string(d))
+            path = "/login"
+            if request.environ.get('extension'):
+                path += ".%s" % request.environ['extension']
+            return redirect_to(path + utils.query_string(d))
         if (password is not None) and not valid_password(c.user, password):
             c.errors.add(errors.WRONG_PASSWORD)
             
diff --git a/r2/r2/lib/pages/pages.py b/r2/r2/lib/pages/pages.py
index 52f48e3ee..60d0b2279 100644
--- a/r2/r2/lib/pages/pages.py
+++ b/r2/r2/lib/pages/pages.py
@@ -19,19 +19,21 @@
 # All portions of the code written by CondeNet are Copyright (c) 2006-2008
 # CondeNet, Inc. All Rights Reserved.
 ################################################################################
-from r2.lib.wrapped import Wrapped
+from r2.lib.wrapped import Wrapped, NoTemplateFound
 from r2.models import IDBuilder, LinkListing, Account, Default, FakeSubreddit, Subreddit
 from r2.config import cache
 from r2.lib.jsonresponse import json_respond
 from r2.lib.jsontemplates import is_api
 from pylons.i18n import _
 from pylons import c, request, g
+from pylons.controllers.util import abort, redirect_to
 
 from r2.lib.captcha import get_iden
 from r2.lib.filters import spaceCompress, _force_unicode
 from r2.lib.menus import NavButton, NamedButton, NavMenu, PageNameNav, JsButton, menu
 from r2.lib.strings import plurals, rand_strings, strings
 from r2.lib.utils import title_to_url
+import sys
 
 def get_captcha():
     if not c.user_is_loggedin or c.user.needs_captcha():
@@ -135,12 +137,21 @@ class Reddit(Wrapped):
         In adition, unlike Wrapped.render, the result is in the form of a pylons
         Response object with it's content set.
         """
-        res = Wrapped.render(self, *a, **kw)
-        if is_api():
-            res = json_respond(res)
-        elif self.space_compress:
-            res = spaceCompress(res)
-        c.response.content = res
+        try:
+            res = Wrapped.render(self, *a, **kw)
+            if is_api():
+                res = json_respond(res)
+            elif self.space_compress:
+                res = spaceCompress(res)
+            c.response.content = res
+        except NoTemplateFound, e:
+            # re-raise the error -- development environment
+            if g.debug:
+                s = sys.exc_info()
+                raise s[1], None, s[2]
+            # die gracefully -- production environment
+            else:
+                abort(404, "not found")
         return c.response
     
     def corner_buttons(self):
diff --git a/r2/r2/lib/wrapped.py b/r2/r2/lib/wrapped.py
index cbbe988dd..1c2a51e9a 100644
--- a/r2/r2/lib/wrapped.py
+++ b/r2/r2/lib/wrapped.py
@@ -47,7 +47,7 @@ class Wrapped(object):
                 pass
             
         if not found:
-            raise AttributeError, attr
+            raise NoTemplateFound, attr
 
         setattr(self, attr, res)
         return res
@@ -71,8 +71,8 @@ class Wrapped(object):
         else:
             try:
                 template = tpm.get(self, style, cache = not debug)
-            except KeyError:
-                raise NoTemplateFound, repr(self)
+            except AttributeError:
+                raise NoTemplateFound, (repr(self), style)
                 
         return template
 
diff --git a/r2/r2/templates/unfoundpage.html b/r2/r2/templates/unfoundpage.html
index 3b2c27093..581881eaf 100644
--- a/r2/r2/templates/unfoundpage.html
+++ b/r2/r2/templates/unfoundpage.html
@@ -17,7 +17,7 @@
 ## the Original Code is CondeNet, Inc.
 ## 
 ## All portions of the code written by CondeNet are Copyright (c) 2006-2008
-## CondeNet, Inc. All Rights Reserved.
+## CondeNet, Inc. All Rights Reserved."
 ################################################################################
 
 <div style="text-align: center;">
diff --git a/r2/r2/templates/unfoundpage.mobile b/r2/r2/templates/unfoundpage.mobile
new file mode 100644
index 000000000..581881eaf
--- /dev/null
+++ b/r2/r2/templates/unfoundpage.mobile
@@ -0,0 +1,26 @@
+## "The contents of this file are subject to the Common Public Attribution
+## License Version 1.0. (the "License"); you may not use this file except in
+## compliance with the License. You may obtain a copy of the License at
+## http://code.reddit.com/LICENSE. The License is based on the Mozilla Public
+## License Version 1.1, but Sections 14 and 15 have been added to cover use of
+## software over a computer network and provide for limited attribution for the
+## Original Developer. In addition, Exhibit A has been modified to be consistent
+## with Exhibit B.
+## 
+## Software distributed under the License is distributed on an "AS IS" basis,
+## WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+## the specific language governing rights and limitations under the License.
+## 
+## The Original Code is Reddit.
+## 
+## The Original Developer is the Initial Developer.  The Initial Developer of
+## the Original Code is CondeNet, Inc.
+## 
+## All portions of the code written by CondeNet are Copyright (c) 2006-2008
+## CondeNet, Inc. All Rights Reserved."
+################################################################################
+
+<div style="text-align: center;">
+<img src="/static/reddit404${thing.choice}.png" alt="reddit is sad" />
+<p class="error">${_("the page you requested does not exist")}</p>
+</div>