[vtkusers] CVS Build error with vtkVolumeProVG500Mapper - multiply defined symbols

[anast.jm at pg.com]

I'm still getting these errors for the last weeks worth of CVS update builds on
WinNT - VC++6. The nightly dashboard looks okay??? Are any of the dashboards
built with VolPro enabled? Any help please (now begging on knees)...john

==============
Linking...
vtkVolumeProVG500Mapper.obj : error LNK2005: "class vtkObject * __cdecl vtkInstantiatorvtkVolumeProMapperNew(void)"
(?vtkInstantiatorvtkVolumeProMapperNew@@YAPAVvtkObject@@XZ) already defined in vtkVolumeProMapper.obj
vtkVolumeProVG500Mapper.obj : warning LNK4006: "class vtkObject * __cdecl vtkInstantiatorvtkVolumeProMapperNew(void)"
(?vtkInstantiatorvtkVolumeProMapperNew@@YAPAVvtkObject@@XZ) already defined in vtkVolumeProMapper.obj; second definition ignored
   Creating library P:\WinCVS\vtk40\VTKbin\bin\Release/vtkRendering.lib and object P:\WinCVS\vtk40\VTKbin\bin\Release/vtkRendering.exp
P:\WinCVS\vtk40\VTKbin\bin\Release/vtkRendering.dll : fatal error LNK1169: one or more multiply defined symbols found
Error executing link.exe.

ALL_BUILD - 2 error(s), 1 warning(s)