Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r55147f11d199be6710172cafcde21547af1f7689 -r842fe6e438c788fc3e1206615202b2decc82f8a3
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 55147f11d199be6710172cafcde21547af1f7689)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 842fe6e438c788fc3e1206615202b2decc82f8a3)
@@ -418,10 +418,11 @@
     // ACK/NAK request
     if ( message->hdr.msgID < MSG_ID_FIRST_TD_TESTER_MESSAGE )
     {
-        if ( respBuffer != COMM_BUFFER_NOT_USED )
-        {
-            sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, respBuffer, ack );
-        }
+        // Already ACK'd msg if required prior to this function
+//        if ( respBuffer != COMM_BUFFER_NOT_USED )
+//        {
+//            sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, respBuffer, ack );
+//        }
     }
     else
     {