problem with C code in fit interpolate

[nick]

Can you provide any information about this error, it is the third time it has occurred with this code

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*** glibc detected *** double free or corruption (!prev): 0x000000000162fc10 ***


One of the processes started by mpirun has exited with a nonzero exit
code.  This typically indicates that the process finished in error.
If your process did not finish in error, be sure to include a "return
0" or "exit(0)" in your C code before exiting the application.

PID 8578 failed on node n10 (192.168.0.241) due to signal 6.
-----------------------------------------------------------------------------

It occurs when running an exmouth model in parallel, (the sequential run works

this is the directory of the parallel run J:\inundation\data\western_australia\exmouth_tsunami_scenario\anuga\outputs\20070525_034301_run_basic_1.4_nbartzis

this is the directory of the last serial run J:\inundation\data\western_australia\exmouth_tsunami_scenario\anuga\outputs\20070525_033245_run_basic_1.4_nbartzis

+-------------------------------------------------------------
| Fri May 25 15:02:22 2007. Evaluating function _file_function
+-------------------------------------------------------------
| Argument:     '/d/xrd/gem/5/nhi/inundation/data/western_australia/exmouth_tsunami_scenario/anuga/boundaries/urs/dampier/1_10000/exmouth_3854_17042007.sww'
| Keyword Args: {'quantities': ['stage', 'xmomentum', 'ymomentum'], 'interpolation_points': Array: (187, 2), 'time_thinning': 12, 'domain_starttime': 0, 'verbose': True}
| Reason:       No cached result
+-------------------------------------------------------------

Reading /d/xrd/gem/5/nhi/inundation/data/western_australia/exmouth_tsunami_scenario/anuga/boundaries/urs/dampier/1_10000/exmouth_3854_17042007.sww
File_function data obtained from: /d/xrd/gem/5/nhi/inundation/data/western_australia/exmouth_tsunami_scenario/anuga/boundaries/urs/dampier/1_10000/exmouth_3854_17042007.sww
  References:
    Lower left corner: [189945.759564, 7488724.335279]
    Start time:   4000.000000
Building interpolation matrix from source mesh (648 vertices, 1086 triangles)
FitInterpolate: Building mesh
FitInterpolate: Building quad tree
Interpolating (187 interpolation points, 1034 timesteps). Timesteps were thinned by a factor of 12
 time step 0 of 1034
 time step 104 of 1034
 time step 208 of 1034
 time step 312 of 1034