Fallback to order line.

It will allow to index not instantiated Software Instances.

master/bt5/vifib_base/SkinTemplateItem/portal_skins/vifib_base/SoftwareInstance_getRootHostingSubscriptionUid.xml

@@ -68,8 +68,9 @@ root_hosting_subscription = root_software_instance.getPredecessorRelatedValue(\n
 #              root Hosting Subscription.\n
 if root_hosting_subscription is None:\n
   # last resort: try to find root hosting subscription by packing list\n
-  instance_setup_line = root_software_instance.Item_getInstancePackingListLine()\n
-  root_hosting_subscription = instance_setup_line.getAggregateValue(portal_type=\'Hosting Subscription\')\n
+  order_line = root_software_instance.getAggregateRelatedValue(portal_type=\'Sale Order Line\')\n
+  if order_line is not None:\n
+    root_hosting_subscription = order_line.getAggregateValue(portal_type=\'Hosting Subscription\')\n
   if root_hosting_subscription is None:\n
     raise ConsistencyError(("Software instance %s has no hosting "\n
                           "subscription as root.") % context.getReference())\n

master/bt5/vifib_base/bt/revision

-380
\ No newline at end of file
+381
\ No newline at end of file