[Discuss-gnuradio] Problem in using trellis Error correction en- and decoder

[Francisco Llaryora]

Hello ,

     I am using trellis encoder and trellis viterbi block, to get a
error corecction method.
i take a snapshot for you:
http://img213.imageshack.us/img213/3435/pantallazoxe.png
The flow:
--->Packet Encoder--->DBPSK Encoder-->DBPSK Decoder--->Packet Decoder---->
works perfect.
Problem is  trellis encoder input and trellis viterbi decoder output
do not match.
why don't match?
I, read the documentation about the FSM file format. ( in gr-trellis directory)
the example, in the directory don't work (FILE error).
Need i chunks to symbols block as the example?
Thanks in advance
Francisco