Simulator not responding after generating xml file

Hello,

I have a MT880 Meter, I generated the simulator xml file reading the meter with the next command line:

Gurux.DLMS.Simulator.Net.exe -S COM6:9600:8None1 -c 1 -s 185 -a Low -P 12345678 -f 128 -o mt880_v2.xml -t Verbose

However when i try to use the simulator:

Gurux.DLMS.Simulator.Net.exe -p 3000 -c 1 -s 185 -a Low -P 12345678 -f 128 -x mt880_v2.xml -t Verbose -N 2

The respond is:

"
DLMS HDLC Logical Name simulator start in ports 3000-3001.
Waiting 00:00:09 before next execution.
Server address: 185
Associations:
++++++++++++++++++++++++++++
Client address: 1 Low authentication, password 12345678
Conformance:
GeneralProtection, GeneralBlockTransfer, BlockTransferWithGetOrRead, BlockTransferWithSetOrWrite, BlockTransferWithAction, MultipleReferences, Get, Set, SelectiveAccess, Action
MaxReceivePduSize: 1280 MaxSendPduSize: 1280

Security suite: Suite0
Security policy: None
Authentication key: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF
Block cipher key: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
Broadcast block cipher key: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

Waiting 00:00:09 before next execution.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
TCP/IP connection established.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
Waiting 00:00:10 before next execution.
TCP/IP connection closed. "

the error in Gurux director is "failed to receive reply from the device in given time".

Note: I added myself the hex pasword in the xml file because it was not added in the first place.
<Secret>31 32 33 34 35 36 37 38</Secret>

I have checked and with the crystal.xml file works just fine.

I appreciate any help