[Paraview] Debugging PV: Where is the source code? Setting breaks in GDB?

[Peter J. Bismuti]

I'm trying to debug PV, and one of the problems I'm having is that I don't 
know where the actual source is.  The error message here points me to a file:

/acct/pjb9508/VTK/paraview-2.4.3/VTK/IO/vtkEnSight6BinaryReader.cxx

but this does not seem to be the actual source code.  Strangely, when I alter 
this file it triggers make to recompile, but the changes are not taking 
effect.  For example, I cannot alter the text at line 222:

"Invalid number of unstructured points"

Also, I cannot seem to set breakpoints in GDB using this file path.  

Can anyone explain to me what is going on?  Thanks. 


# Error or warning: There was a VTK Error in 
file: /acct/pjb9508/VTK/paraview-2.4.3/VTK/IO/vtkEnSight6BinaryReader.cxx 
(222)
 vtkEnSight6BinaryReader (0x1e7f600): Invalid number of unstructured points; 
check that ByteOrder is set correctly.
ErrorMessage end
ErrorMessage
# Error or warning: There was a VTK Error in 
file: /acct/pjb9508/VTK/paraview-2.4.3/VTK/IO/vtkEnSightReader.cxx (270)
 vtkEnSight6BinaryReader (0x1e7f600): error reading geometry file
ErrorMessage end
ErrorMessage
# Error or warning: There was a VTK Error in 
file: /acct/pjb9508/VTK/paraview-2.4.3/VTK/Filtering/vtkExecutive.cxx (688)
 vtkCompositeDataPipeline (0x1e7ec10): Algorithm 
vtkEnSight6BinaryReader(0x1e7f600) returned failure for request: 
vtkInformation (0x1e7d750)
  Debug: Off
  Modified Time: 101813
  Reference Count: 1
  Registered Events: (none)
  Request: REQUEST_DATA
  FORWARD_DIRECTION: 0
  KEYS_TO_COPY: UPDATE_BLOCKS
  FROM_OUTPUT_PORT: 0
  ALGORITHM_AFTER_FORWARD: 1
ErrorMessage end