--- a/targets/Win32/plc_Win32_main.c	Thu Feb 24 15:54:45 2011 +0100
+++ b/targets/Win32/plc_Win32_main.c	Wed Mar 16 17:26:54 2011 +0100
@@ -234,6 +234,14 @@
 	return 1;
 }
 
+void ValidateRetainBuffer(void)
+{
+}
+
+void InValidateRetainBuffer(void)
+{
+}
+
 void Retain(unsigned int offset, unsigned int count, void * p)
 {
     unsigned int position;