[vtkusers] InsertNextCell memory allocation problem

[Markus Louw]

Hi All

I think there is some kind of a memory allocation problem with
int vtkCellTypes::InsertNextCell(unsigned char type, int loc)

Using 4 differerent PolyData objects, I load the cells into each one by building up a 
vtkCellArray.   After inserting about 250 cells into the vtkCellArray for the 3rd vtkPolyData object, I get an error which says that the memory could not be written to. 

vtkPoints *points = vtkPoints::New();
  points->SetNumberOfPoints(Pset->size());   
vtkCellArray *polys = vtkCellArray::New();
 
points->InsertPoint(i,x);
  
polys->InsertNextCell(3,tri);
  
I used to get a similar error for inserting points, which was fixed by setting the number of points beforehand, but 
using

polys->Allocate(2000, 1000 ); 

beforehand doesn't help.

Has anyone come across this or are there any ideas?

Thanks
Markus
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