--- Hybrid/vtkVRMLImporter.cxx	2010-09-27 15:40:05.000000000 -0500
+++ /tmp/vtkVRMLImporter.cxx	2011-11-25 00:06:10.885810346 -0600
@@ -6374,6 +6374,11 @@
     vtkIdType *pts=0;
     vtkIdType npts;
     vtkPolyData *pd = (vtkPolyData *)this->CurrentMapper->GetInput();
+	if (pd == 0)
+	{
+		pd = vtkPolyData::New();
+		this->CurrentMapper->SetInput(pd);
+	}
     if (pd->GetNumberOfPolys() > 0)
       cells = pd->GetPolys();
     else