Index: Rendering/vtkActor.cxx
===================================================================
RCS file: /cvsroot/VTK/VTK/Rendering/vtkActor.cxx,v
retrieving revision 1.132
diff -u -r1.132 vtkActor.cxx
--- Rendering/vtkActor.cxx	18 Oct 2006 16:38:48 -0000	1.132
+++ Rendering/vtkActor.cxx	28 Feb 2007 15:29:42 -0000
@@ -295,7 +295,14 @@
   // get the bounds of the Mapper if we have one
   if (!this->Mapper)
     {
-    return this->Bounds;
+    if (vtkMath::AreBoundsInitialized(this->Bounds))
+      {
+      return this->Bounds;
+      }
+    else
+      {
+      return NULL;
+      }
     }
 
   bounds = this->Mapper->GetBounds();