diff -r ff060d157dae -r 8e9494006e7b src/ldt/ldt/user/models.py
--- a/src/ldt/ldt/user/models.py	Wed Jan 25 15:47:19 2012 +0100
+++ b/src/ldt/ldt/user/models.py	Wed Jan 25 17:57:01 2012 +0100
@@ -53,7 +53,9 @@
             profile = GroupProfile()
             profile.group_id = instance.id
             profile.save()
-            instance.user_set.add(User.objects.filter(is_superuser=True)[0])            
+            admins = User.objects.filter(is_superuser=True)
+            if admins:
+                instance.user_set.add(admins[0])            
             
 # To keep consistency with User.get_profile() method
 def get_profile(self):