[vtkusers] Delaunay3D Unable to factor linear system?

[David Doria]

Can anyone explain why this code:
http://www.vtk.org/Wiki/VTK/Examples/ConvexHull_vtkDelaunay3D_RealData

Works on Input.vtp (a sphere with 50 points) , but not HardInput.vtp
(a sphere with 290 points)

(data available here http://www.rpi.edu/~doriad/VTK_List/Delaunay3D/)?

I am getting "Unable to factor linear system" when I try it with HardInput.vtp.

Thanks,

David