[vtkusers] problem with vtkFloatArray

[John Biddiscombe]

> The indicated type is incomplete.
> 
>     vtkFloatArray *polyScalars = vtkFloatArray::New();  //changed to fit
> vtk4.0

You probably have
#include "vtkDataArray.h"
and need
#include "vtkFloatArray.h"

JB