--- a/targets/Win32/plc_Win32_main.c	Fri Mar 13 17:19:58 2015 +0100
+++ b/targets/Win32/plc_Win32_main.c	Fri Mar 13 22:36:52 2015 +0100
@@ -244,6 +244,14 @@
 	WaitForSingleObject(python_sem, INFINITE);
 }
 
+void InitRetain(void)
+{
+}
+
+void CleanupRetain(void)
+{
+}
+
 int CheckRetainBuffer(void)
 {
 	return 1;