fixed problem with queue_group
diff --git a/aos/build/queues/objects/namespaces.rb b/aos/build/queues/objects/namespaces.rb
index 74f7197..ea3aa80 100644
--- a/aos/build/queues/objects/namespaces.rb
+++ b/aos/build/queues/objects/namespaces.rb
@@ -150,6 +150,7 @@
 	end
 	def test_lookup(namespace)
 		@names.each do |name|
+			return nil if(!namespace.respond_to?(:[]))
 			namespace = namespace[name]
 			return nil if(!namespace)
 		end