SMPP: no SMM text when receiving

Dear kannel masters,
we use kannel with SMPP3.4
We can send SM messages but when receiving the
msg_text is blank. You can find below a SMPP DUMP (the
short_message is "" always) either we use 1.2.0
version or even the today's snapshot.
Can you encountered such a problem? Any idea on how to
solve it?

Tim

SMPP PDU 0x8167fe8 dump:
2002-10-08 16:22:19 [6] DEBUG:   type_name: deliver_sm
2002-10-08 16:22:19 [6] DEBUG:   command_id: 5 =
0x00000005
2002-10-08 16:22:19 [6] DEBUG:   command_status: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:   sequence_number: 1 =
0x00000001
2002-10-08 16:22:19 [6] DEBUG:   service_type: NULL
2002-10-08 16:22:19 [6] DEBUG:   source_addr_ton: 1 =
0x00000001
2002-10-08 16:22:19 [6] DEBUG:   source_addr_npi: 1 =
0x00000001
2002-10-08 16:22:19 [6] DEBUG:   source_addr:
"12345678909"
2002-10-08 16:22:19 [6] DEBUG:   dest_addr_ton: 3 =
0x00000003
2002-10-08 16:22:19 [6] DEBUG:   dest_addr_npi: 9 =
0x00000009
2002-10-08 16:22:19 [6] DEBUG:   destination_addr:
"1234"
2002-10-08 16:22:19 [6] DEBUG:   esm_class: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:   protocol_id: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:   priority_flag: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:  
schedule_delivery_time: NULL
2002-10-08 16:22:19 [6] DEBUG:   validity_period: NULL
2002-10-08 16:22:19 [6] DEBUG:   registered_delivery:
0 = 0x00000000
2002-10-08 16:22:19 [6] DEBUG:  
replace_if_present_flag: 0 = 0x00000000
2002-10-08 16:22:19 [6] DEBUG:   data_coding: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:   sm_default_msg_id: 0
= 0x00000000
2002-10-08 16:22:19 [6] DEBUG:   sm_length: 0 =
0x00000000
2002-10-08 16:22:19 [6] DEBUG:   short_message: ""
2002-10-08 16:22:19 [6] DEBUG: SMPP PDU dump ends.

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