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We have an intermittent crash that is somewhat hard to replicate for structured grids, when clipping then streamtracing. I have it narrowed down to a 2 file vtm dataset. It appears this happens when the stream trace goes through one of the files, but not the other files.

The good news is that there are lots of the following error messages:

(  30.905s) [paraview        ]vtkFindCellStrategy.cxx:43     ERR| Initialize must be called with non-NULL instance of vtkPointSet
(  30.906s) [paraview        ]vtkFindCellStrategy.cxx:43     ERR| Initialize must be called with non-NULL instance of vtkPointSet
(  30.907s) [paraview        ]vtkFindCellStrategy.cxx:43     ERR| Initialize must be called with non-NULL instance of vtkPointSet

Here is how to replicate:

• Linux, master (and 5.8.0, and 5.9.0-RC2), builtin server.
• File/ Load State. clipped_nose_and_calc-6-alan.py. Apply.

You will see all of the prints. Put a break in the vtkFindCellStrategy.cxx at line 43. It's obvious that one of the three tests is failing.

I will tar up the dataset and state file, and send to Cory and Utkarsh.

@jamauld

@cory.quammen @utkarsh.ayachit I am marking this as 5.10. I assume we are way too late for 5.9. We are OK if this slips to next spring.