--- a/downloads/__init__.py	Tue Apr 07 20:16:06 2015 -0500
+++ b/downloads/__init__.py	Tue Apr 07 20:20:42 2015 -0500
@@ -1,1 +1,1 @@
-import signals
+default_app_config = 'downloads.apps.DownloadsConfig'

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/downloads/apps.py	Tue Apr 07 20:20:42 2015 -0500
@@ -0,0 +1,8 @@
+from django.apps import AppConfig
+
+
+class DownloadsConfig(AppConfig):
+    name = 'downloads'
+
+    def ready(self):
+        import downloads.receivers

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/downloads/receivers.py	Tue Apr 07 20:20:42 2015 -0500
@@ -0,0 +1,63 @@
+"""Signal handlers for the downloads application.
+
+We use signals to compute the denormalized category counts whenever a download
+is saved.
+
+"""
+from django.db.models.signals import post_save
+from django.db.models.signals import post_delete
+
+from downloads.models import Category, Download, PendingDownload
+
+
+def on_download_save(sender, **kwargs):
+    """This function updates the count field for all categories.
+    It is called whenever a download is saved via a signal.
+    """
+    if kwargs['created']:
+        # we only have to update the parent category
+        download = kwargs['instance']
+        cat = download.category
+        cat.count = Download.public_objects.filter(category=cat).count()
+        cat.save()
+    else:
+        # update all categories just to be safe (an existing download could
+        # have been moved from one category to another
+        cats = Category.objects.all()
+        for cat in cats:
+            cat.count = Download.public_objects.filter(category=cat).count()
+            cat.save()
+
+
+def on_download_delete(sender, **kwargs):
+    """This function updates the count field for the download's parent
+    category. It is called when a download is deleted via a signal.
+
+    We now delete the uploaded file when the download is deleted.
+    """
+    # update the parent category
+    download = kwargs['instance']
+    cat = download.category
+    cat.count = Download.public_objects.filter(category=cat).count()
+    cat.save()
+
+    # delete the actual file
+    if download.file:
+        download.file.delete(save=False)
+
+
+def on_pending_download_delete(sender, **kwargs):
+    """Delete the uploaded file if it exists."""
+
+    download = kwargs['instance']
+    # delete the actual file
+    if download.file:
+        download.file.delete(save=False)
+
+
+post_save.connect(on_download_save, sender=Download,
+        dispatch_uid='downloads.receivers')
+post_delete.connect(on_download_delete, sender=Download,
+        dispatch_uid='downloads.receivers')
+post_delete.connect(on_pending_download_delete, sender=PendingDownload,
+        dispatch_uid='downloads.receivers')

--- a/downloads/signals.py	Tue Apr 07 20:16:06 2015 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,60 +0,0 @@
-"""Signals for the downloads application.
-We use signals to compute the denormalized category counts whenever a download
-is saved."""
-from django.db.models.signals import post_save
-from django.db.models.signals import post_delete
-
-from downloads.models import Category, Download, PendingDownload
-
-
-def on_download_save(sender, **kwargs):
-    """This function updates the count field for all categories.
-    It is called whenever a download is saved via a signal.
-    """
-    if kwargs['created']:
-        # we only have to update the parent category
-        download = kwargs['instance']
-        cat = download.category
-        cat.count = Download.public_objects.filter(category=cat).count()
-        cat.save()
-    else:
-        # update all categories just to be safe (an existing download could
-        # have been moved from one category to another
-        cats = Category.objects.all()
-        for cat in cats:
-            cat.count = Download.public_objects.filter(category=cat).count()
-            cat.save()
-
-
-def on_download_delete(sender, **kwargs):
-    """This function updates the count field for the download's parent
-    category. It is called when a download is deleted via a signal.
-
-    We now delete the uploaded file when the download is deleted.
-    """
-    # update the parent category
-    download = kwargs['instance']
-    cat = download.category
-    cat.count = Download.public_objects.filter(category=cat).count()
-    cat.save()
-
-    # delete the actual file
-    if download.file:
-        download.file.delete(save=False)
-
-
-def on_pending_download_delete(sender, **kwargs):
-    """Delete the uploaded file if it exists."""
-
-    download = kwargs['instance']
-    # delete the actual file
-    if download.file:
-        download.file.delete(save=False)
-
-
-post_save.connect(on_download_save, sender=Download,
-        dispatch_uid='downloads.signals')
-post_delete.connect(on_download_delete, sender=Download,
-        dispatch_uid='downloads.signals')
-post_delete.connect(on_pending_download_delete, sender=PendingDownload,
-        dispatch_uid='downloads.signals')