Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r700458364d67df3f33a3006e9c5fd35607894c55 -rfe5a9008ab1602cf45e31dfaacf66369e8367618
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 700458364d67df3f33a3006e9c5fd35607894c55)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision fe5a9008ab1602cf45e31dfaacf66369e8367618)
@@ -627,6 +627,12 @@
                 self.demoSelection = 1  # Reset to beginning (rather than Disinfect choices '= 50')
                 self.demoCount = 0  # immediately
 
+            elif msg_id == MsgIds.MSG_ID_UI_POST_TX_NEXT_REQUEST.value:          # 0x6
+                rsp_id = MsgIds.MSG_ID_HD_POST_TX_NEXT_CMD_RESPONSE.value
+                rsp_payload = integer_to_bytearray(EResponse.Accepted)
+                rsp_payload += integer_to_bytearray(RequestRejectReasons.REQUEST_REJECT_REASON_NONE.value)
+                self.demoCount = 0  # immediately
+
             #
             # --------------------------------------------------
             # Send Response if needed