diff --git a/kalite/coachreports/static/js/coachreports/exercise_mastery_view.js b/kalite/coachreports/static/js/coachreports/exercise_mastery_view.js
index 96b4c1d0c3..2741185f38 100644
--- a/kalite/coachreports/static/js/coachreports/exercise_mastery_view.js
+++ b/kalite/coachreports/static/js/coachreports/exercise_mastery_view.js
@@ -30,7 +30,7 @@ $(function() {
 
         // adjust view in data cells
         $(selector).each(function() {
-            $(this).toggle()
+            $(this).toggle();
         });
         $(selector).each(function() {
             $(this).height(20);
diff --git a/kalite/contentload/management/commands/generate_assessment_zips.py b/kalite/contentload/management/commands/generate_assessment_zips.py
index 20a97a5d28..df5b4a4d78 100644
--- a/kalite/contentload/management/commands/generate_assessment_zips.py
+++ b/kalite/contentload/management/commands/generate_assessment_zips.py
@@ -110,14 +110,15 @@ def localhosted_image_urls(items):
     # we copy so we make sure we don't modify the items passed in to this function
     newitems = copy.deepcopy(items)
 
-    url_to_replace = r'https?://[\w\.\-\/]+\/(?P<filename>[\w\.\-]+\.(png|gif|jpg))'
-
     for _, v in newitems.iteritems():
-        old_item_data = v['item_data']
-        v['item_data'] = re.sub(url_to_replace, _old_item_url_to_content_url, old_item_data)
+        v['item_data'] = convert_urls(v['item_data'])
 
     return newitems
 
+def convert_urls(string):
+    """ Convert urls in i18n strings into localhost urls. """
+    url_to_replace = r'https?://[\w\.\-\/]+\/(?P<filename>[\w\.\-]+\.(png|gif|jpg|JPEG|JPG))'
+    return re.sub(url_to_replace, _old_item_url_to_content_url, string)
 
 def _old_item_url_to_content_url(matchobj):
     return "/content/khan/%s" % matchobj.group("filename")
diff --git a/kalite/contentload/tests/generate_assessment_zips.py b/kalite/contentload/tests/generate_assessment_zips.py
index f90df0f32a..d11fec1546 100644
--- a/kalite/contentload/tests/generate_assessment_zips.py
+++ b/kalite/contentload/tests/generate_assessment_zips.py
@@ -8,6 +8,7 @@
 from mock import patch, MagicMock
 
 from django.core.management import call_command
+from django.test import TestCase
 
 import kalite.version as version
 from kalite.testing import KALiteTestCase
@@ -20,6 +21,19 @@
                                             "assessment_items_sample.json")
 
 
+class TestUrlConversion(TestCase):
+    
+    def test_url_converted(self):
+        url_string = "A string with http://example.com/cat_pics.gif"
+        expected_string = "A string with /content/khan/cat_pics.gif"
+        self.assertEqual(expected_string, mod.convert_urls(url_string))
+    
+    def test_multiple_urls_in_one_string_converted(self):
+        url_string = "A string with http://example.com/cat_pics.JPEG http://example.com/cat_pics2.gif"
+        expected_string = "A string with /content/khan/cat_pics.JPEG /content/khan/cat_pics2.gif"
+        self.assertEqual(expected_string, mod.convert_urls(url_string))
+
+
 class GenerateAssessmentItemsCommandTests(KALiteTestCase):
 
     def setUp(self):
diff --git a/python-packages/securesync/devices/models.py b/python-packages/securesync/devices/models.py
index 4db881fccc..b84efe9bfe 100755
--- a/python-packages/securesync/devices/models.py
+++ b/python-packages/securesync/devices/models.py
@@ -8,7 +8,7 @@
 from django.conf import settings
 from django.contrib.auth.models import check_password
 from django.core.exceptions import ValidationError, ObjectDoesNotExist
-from django.db import models, transaction
+from django.db import models, transaction, IntegrityError
 from django.db.models import Q
 from django.db.models.expressions import F
 from django.utils.text import compress_string
@@ -207,13 +207,12 @@ def set_key(self, key):
         self.key = key
 
     def get_key(self):
-        self.key = None
         if not self.key:
             try:
                 if self.get_metadata().is_own_device:
                     self.key = crypto.get_own_key()
-            except:
-                # If device has not yet been saved, but ID is set, then getting metadata may fail (on MySQL)
+            except Device.DoesNotExist:
+                # get_metadata can fail if the Device instance hasn't been persisted to the db
                 pass
             if not self.key and self.public_key:
                 self.key = crypto.Key(public_key_string=self.public_key)
@@ -224,7 +223,12 @@ def _hashable_representation(self):
         return super(Device, self)._hashable_representation(fields=fields)
 
     def get_metadata(self):
-        return DeviceMetadata.objects.get_or_create(device=self)[0]
+        try:
+            return DeviceMetadata.objects.get_or_create(device=self)[0]
+        except IntegrityError as e:
+            # Possible from get_or_create if the DeviceMetadata object doesn't exist
+            # and the Device hasn't been persisted to the database yet.
+            raise Device.DoesNotExist()
 
     def get_counter_position(self):
         """