[vtkusers] Crashed on vtkDataArray::SetName(...)

[Weiguang Guan]

Can anyone tell me what's wrong with the following code section:

   // allocate the new scalars
   vtkDataArray* scalars = vtkDataArray::CreateDataArray(dataType);
   scalars->SetNumberOfComponents(numComponents);

   // allocate enough memory
   scalars->SetNumberOfTuples(numTuples);
   scalars->SetName("first");

I got "Segmentation fault" when it executes scalars->SetName("first"). 
dataType is VTK_FLOAT, numComponents = 1, numTuples = 6000000.

Thanks.

Weiguang