[vtkusers] error when using RemoveActor()

[Matt Schmiermund]

I get the following error after adding some
RemoveActor lines to my program. 

Error: Unresolved external
'vtkViewport::RemovePropW(vtkProp *)' referenced from
 C:\DOCUMENTS AND SETTINGS\ALL
USERS\DOCUMENTS\PELDOMFLOW\VTKWIDGET.OBJ


This looked similar to what happened when I didn't
have the librarys linking properly, so I have linked
to all of the following libraries (some of which I
think are probably unnecessary) and I am still getting
the same error.

vtkFiltering
vtkRendering 
vtkCommon 
vtkGraphics 
vtkIO 
vtkImaging 
vtkHybrid 
vtkParallel 
vtkPatented
vtkqt 
vtkexpat 
vtkfreetype 
vtkftgl 
vtkjpeg 
vtkpng 
vtktiff 
vtkzlib 

If anyone knows what I am doing wrong I would
appreciate any help.

-Matt Schmiermund