[Discuss-gnuradio] why does this code don't work!! help

[anmar]

hi,
i have made this simple program, it spouse to send tx signals one to
each tx board.
#!/usr/bin/env python
from gnuradio import gr
from gnuradio.eng_notation import num_to_str, str_to_num
from gnuradio import usrp
from gnuradio import audio
from gnuradio import blks
from gnuradio.eng_option import eng_option
from optparse import OptionParser
import usrp_dbid
import math
import sys

def build_graph ():

    fg = gr.flow_graph ()
    u = usrp.sink_c(nchan=2, interp_rate=128)
    sampling_freq = 128e6

    src0 = gr.sig_source_f ( sampling_freq, gr.GR_SIN_WAVE, 30e4, 1.0, 1
)
    src1 = gr.sig_source_f ( sampling_freq, gr.GR_SIN_WAVE, 10e4, 0.5, 1
)

    #this was an am_tx script
    #mixer = gr.multiply_ff ()
    #dst = usrp.sink_c(0, 128)
    #f2c = gr.float_to_complex()

    interleaver = gr.interleave(gr.sizeof_gr_complex)
    fg.connect(src0, (interleaver, 0))
    fg.connect(src1, (interleaver, 1))
    fg.connect(interleaver, u)
    r0 = u.tune(0, u.db[0][0], 10e6)   # set center freq on side A
d'board
    r1 = u.tune(1, u.db[1][0], 5e6)
    return fg

if __name__ == '__main__':
    fg = build_graph ()
    fg.start ()
    raw_input ('Press Enter to quit: ')
    fg.stop ()

when i run that code i get this error:

# python am_tx_two_sig.py
Traceback (most recent call last):
  File "am_tx_two_sig.py", line 41, in ?
    fg = build_graph ()
  File "am_tx_two_sig.py", line 32, in build_graph
    fg.connect(src0, (interleaver, 0))
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/gr/basic_flow_graph.py",
line 115, in connect
    self._connect (points[i-1], points[i])
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/gr/basic_flow_graph.py",
line 120, in _connect
    self._connect_prim (s, d)
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/gr/basic_flow_graph.py",
line 128, in _connect_prim
    self._check_type_match (src_endpoint, dst_endpoint)
  File
"/usr/local/lib/python2.4/site-packages/gnuradio/gr/basic_flow_graph.py",
line 242, in _check_type_match
    raise ValueError, (
ValueError: source and destination data sizes are different:
sig_source_f interleave

what is going wrong this is not much different of the
fm_tx_2_daughterboard.py.
Thanks
anmar

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