gistfile1.diff

--- a/openstack_dashboard/dashboards/admin/info/tables.py	2014-04-22 13:04:25.631852097 +0200
+++ b/openstack_dashboard/dashboards/admin/info/tables.py	2014-04-22 13:05:17.038038608 +0200
@@ -57,8 +57,10 @@
 def get_hosts(zone):
     hosts = zone.hosts
     host_details = []
+    if hosts is None:
+        return []
     for name, services in hosts.items():
-        up = all([s['active'] and s['available'] for k, s in services.items()])
+        up = all(s['active'] and s['available'] for s in services.values())
         up = _("Services Up") if up else _("Services Down")
         host_details.append("%(host)s (%(up)s)" % {'host': name, 'up': up})
     return host_details