I'm able to build the entire OpenCASCADE library(6.8.0) in VS2013 except for the TKIVtk project. I get unresolved external errors when linking. I am using VTK-6.1.0-vc12-64. Everything appears to be correct in the project settings as far as additional libraries and directories. The unresolved externals refer to vtkIdList, vtkPoints, vtkPolyData, vtkLookupTable and vtkDataObject. Can anyone help me resolve this? Thank you.