It's still unhappy at the startup of the initization of the thermostat, I won't copy the entire log this time, just from start to the point where it complains about the ACK mode:
10/25/04 9:23:44 PM RCS X10 Thermostat startup Beginning background initialization of thermostats ...
10/25/04 9:23:49 PM RCS X10 Thermostat Info Initializing communications with Living Room Master Thermostat
10/25/04 9:24:10 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:10 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 01 LEN 05
10/25/04 9:24:10 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:10 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 01 LEN 00
10/25/04 9:24:10 PM LynX-10 PLC Received an ACK
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 01 LEN 01
10/25/04 9:24:11 PM LynX-10 PLC Received an ACK
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 02 LEN 00
10/25/04 9:24:11 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:11 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 02 LEN 05
10/25/04 9:24:11 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:11 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 82 LEN 03
10/25/04 9:24:11 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:12 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:12 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:13 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:13 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 02 LEN 01
10/25/04 9:24:13 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:13 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:13 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 83 LEN 03
10/25/04 9:24:13 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:18 PM LynX-10 PLC Received an ACK
10/25/04 9:24:18 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 03 LEN 00
10/25/04 9:24:18 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:18 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:18 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 03 LEN 05
10/25/04 9:24:19 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:19 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:19 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:19 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 03 LEN 01
10/25/04 9:24:19 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:19 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 04 LEN 05
10/25/04 9:24:20 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:20 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 04 LEN 00
10/25/04 9:24:20 PM LynX-10 PLC Received an ACK
10/25/04 9:24:20 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 84 LEN 03
10/25/04 9:24:20 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:21 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:21 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:21 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 85 LEN 03
10/25/04 9:24:21 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 04 LEN 01
10/25/04 9:24:21 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:21 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:32 PM LynX-10 PLC Received an ACK
10/25/04 9:24:32 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:32 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 05 LEN 05
10/25/04 9:24:32 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:32 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 05 LEN 00
10/25/04 9:24:33 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:33 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:33 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 05 LEN 01
10/25/04 9:24:33 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 86 LEN 02
10/25/04 9:24:34 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 87 LEN 03
10/25/04 9:24:34 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:34 PM LynX-10 PLC RX: X10 PACKET: 02 11
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 06 LEN 00
10/25/04 9:24:34 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:34 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 06 LEN 05
10/25/04 9:24:34 PM LynX-10 PLC Received an ACK
10/25/04 9:24:34 PM LynX-10 PLC Received an X10 COLLISION
10/25/04 9:24:35 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 06 LEN 01
10/25/04 9:24:35 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:35 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:35 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 88 LEN 03
10/25/04 9:24:35 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:35 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:52 PM RCS X10 Thermostat Warning Unable to confirm that Ack Message Mode for Living Room Master Thermostat was set to On
10/25/04 9:24:53 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 07 LEN 00
10/25/04 9:24:53 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 16
10/25/04 9:24:53 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:53 PM LynX-10 PLC Received an ACK
10/25/04 9:24:53 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 07 LEN 05
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 08 LEN 00
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 08 0F 09 FF
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 8A LEN 04
10/25/04 9:24:54 PM LynX-10 PLC Received an X10 COLLISION
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 02 11
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 89 LEN 02
10/25/04 9:24:54 PM LynX-10 PLC Received an ACK
10/25/04 9:24:54 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 16
10/25/04 9:24:54 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 08 LEN 05
10/25/04 9:24:54 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 07 LEN 01
10/25/04 9:24:54 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:23:44 PM RCS X10 Thermostat startup Beginning background initialization of thermostats ...
10/25/04 9:23:49 PM RCS X10 Thermostat Info Initializing communications with Living Room Master Thermostat
10/25/04 9:24:10 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:10 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 01 LEN 05
10/25/04 9:24:10 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:10 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 01 LEN 00
10/25/04 9:24:10 PM LynX-10 PLC Received an ACK
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 01 LEN 01
10/25/04 9:24:11 PM LynX-10 PLC Received an ACK
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 02 LEN 00
10/25/04 9:24:11 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:11 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 02 LEN 05
10/25/04 9:24:11 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:11 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:11 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 82 LEN 03
10/25/04 9:24:11 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:12 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:12 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:13 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:13 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 02 LEN 01
10/25/04 9:24:13 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:13 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:13 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 83 LEN 03
10/25/04 9:24:13 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:18 PM LynX-10 PLC Received an ACK
10/25/04 9:24:18 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 03 LEN 00
10/25/04 9:24:18 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:18 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:18 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 03 LEN 05
10/25/04 9:24:19 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:19 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:19 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:19 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 03 LEN 01
10/25/04 9:24:19 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:19 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 04 LEN 05
10/25/04 9:24:20 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:20 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 04 LEN 00
10/25/04 9:24:20 PM LynX-10 PLC Received an ACK
10/25/04 9:24:20 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 84 LEN 03
10/25/04 9:24:20 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:21 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:21 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:21 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 85 LEN 03
10/25/04 9:24:21 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 04 LEN 01
10/25/04 9:24:21 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:21 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:32 PM LynX-10 PLC Received an ACK
10/25/04 9:24:32 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:32 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 05 LEN 05
10/25/04 9:24:32 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:32 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 05 LEN 00
10/25/04 9:24:33 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:33 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:33 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 05 LEN 01
10/25/04 9:24:33 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 86 LEN 02
10/25/04 9:24:34 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 87 LEN 03
10/25/04 9:24:34 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:34 PM LynX-10 PLC RX: X10 PACKET: 02 11
10/25/04 9:24:34 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 06 LEN 00
10/25/04 9:24:34 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 14
10/25/04 9:24:34 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 06 LEN 05
10/25/04 9:24:34 PM LynX-10 PLC Received an ACK
10/25/04 9:24:34 PM LynX-10 PLC Received an X10 COLLISION
10/25/04 9:24:35 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 06 LEN 01
10/25/04 9:24:35 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:35 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:35 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 88 LEN 03
10/25/04 9:24:35 PM LynX-10 PLC RX: X10 PACKET: 1D 0F FF
10/25/04 9:24:35 PM LynX-10 PLC RX: Received status reply without an address first
10/25/04 9:24:52 PM RCS X10 Thermostat Warning Unable to confirm that Ack Message Mode for Living Room Master Thermostat was set to On
10/25/04 9:24:53 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 07 LEN 00
10/25/04 9:24:53 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 16
10/25/04 9:24:53 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
10/25/04 9:24:53 PM LynX-10 PLC Received an ACK
10/25/04 9:24:53 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 07 LEN 05
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 01 NODE 00 SEQ 08 LEN 00
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 08 0F 09 FF
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 8A LEN 04
10/25/04 9:24:54 PM LynX-10 PLC Received an X10 COLLISION
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 02 11
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 89 LEN 02
10/25/04 9:24:54 PM LynX-10 PLC Received an ACK
10/25/04 9:24:54 PM LynX-10 PLC TX: X10 PACKET: 29 0F 03 FF 16
10/25/04 9:24:54 PM LynX-10 PLC TX: LynX-NET packet = NET 10 NODE 00 SEQ 08 LEN 05
10/25/04 9:24:54 PM LynX-10 PLC TX: Received an X10 command success
10/25/04 9:24:54 PM LynX-10 PLC RX: X10 PACKET: 01
10/25/04 9:24:54 PM LynX-10 PLC RX: LynX-NET packet = NET 10 NODE 00 SEQ 07 LEN 01
10/25/04 9:24:54 PM LynX-10 PLC TX: Added an outbound event to the queue: P 4
Comment