diff --git a/app/models/user.rb b/app/models/user.rb
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -125,6 +125,9 @@
       begin
         if self.site==nil
           self.site = Site.find_by_name('default')
+          if self.site==nil
+            self.site = Site.find(1)  # when 'default has be renamed'
+          end
         end
       rescue
       end