[vtkusers] error while creating new instance of vtkStructuredGridToPolyDataFilter

[kshivann at engineering.uiowa.edu]

hi all,
   i get the error message " error C2440: 'initializing' : cannot convert from
'vtkObject *' to 'vtkStructuredGridToPolyDataFilter *'" while creating a new
instance of vtkStructuredGridToPolyDataFilter * . does anyone know the cause of
the error.

thanks

kiran