dft optimization failed

Clicked A Few Times

10:04:29 AM PDT - Wed, Mar 12th 2014

hi,
I'm having issues with optimizing this input file, hope someone can help me with this.
Thanks.

start cis_butadiene_2_b3lyp_6311ags

geometry units angstrom

C                 -1.25395848   -1.57241976   -0.00000000

H                 -1.52236717   -2.03945087   -0.92452081

H                 -1.51962538   -2.03468016    0.92770492

C                 -0.57868418   -0.39744246   -0.00000000

H                 -1.11184792    0.53026246   -0.00000000

C                  0.96131582   -0.39744246    0.00000000

C                  1.63659013   -1.57241976    0.00000000

H                  1.90317201   -2.03627222    0.92664718

H                  1.49723316    0.52867449    0.00000000

H                  1.90317201   -2.03627222   -0.92664718

symmetry c2v

end

basis
H library 6-311+g*
C library 6-311+g*
end

dft
xc b3lyp
end

driver
maxiter 2000
end

task dft optimize
task dft freq

Clicked A Few Times

10:08:16 AM PDT - Wed, Mar 12th 2014

EAF file 0: "./cis_butadiene_2_b3lyp_6311ags.aoints.00" size=745537536 bytes

              write      read    awrite     aread      wait

              -----      ----    ------     -----      ----

    calls:     2159        37         0     43360     43360

  data(b): 1.13e+09  1.94e+07  0.00e+00  2.27e+10

  time(s): 0.00e+00  0.00e+00  0.00e+00  0.00e+00  0.00e+00

rate(mb/s): 0.00e+00 0.00e+00

Parallel integral file used   22738 records with       0 large values

driver: task_gradient failed        0

------------------------------------------------------------------------

There is an error related to the specified geometry

------------------------------------------------------------------------

For more information see the NWChem manual at http://nwchemgit.github.io/index.php/NWChem_Documentation

For further details see manual section:                                                                                                                                                                                                                                                                

driver: task_gradient failed        0

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