Fix another admin problem
diff --git a/xos/services/vpn/admin.py b/xos/services/vpn/admin.py
index 469b843..133b747 100644
--- a/xos/services/vpn/admin.py
+++ b/xos/services/vpn/admin.py
@@ -195,7 +195,9 @@
                 self.instance.provider_service.get_next_available_port(
                     self.instance.protocol))
 
-        self.instance.use_ca_from_id = self.cleaned_data.get('use_ca_from').id
+        if (self.cleaned_data.get('use_ca_from')):
+            self.instance.use_ca_from_id = self.cleaned_data.get('use_ca_from').id
+
         result.save()  # Need to do this so that we know the ID
 
         self.instance.pki_dir = (