diff -r bbd1e1744c91 -r 0c20fc810d61 plcopen/InstanceTagnameCollector.py
--- a/plcopen/InstanceTagnameCollector.py	Tue Feb 20 11:24:10 2018 +0100
+++ b/plcopen/InstanceTagnameCollector.py	Tue Feb 20 11:24:40 2018 +0100
@@ -4,7 +4,7 @@
 # See COPYING file for copyrights details.
 
 from __future__ import absolute_import
-from plcopen.XSLTModelQuery import XSLTModelQuery, _StringValue, _BoolValue, _translate_args
+from plcopen.XSLTModelQuery import XSLTModelQuery 
 from plcopen.types_enums import *
 
 class InstanceTagName(object):