early in the build process i&#39;m getting the following error message.  I checked and both of the customwidget.h and extension.h exists in the QtDesigner directory?<br><br>[  2%] Built target paraview_mpi_pyc<br>In file included from /home/melochee/QtSDK/Desktop/Qt/474/gcc/include/QtDesigner/QDesignerCustomWidgetInterface:1:0,<br>
                 from /home/melochee/projects/ParaView-bin/ParaView-3.12.0/VTK/GUISupport/Qt/Q4VTKWidgetPlugin.h:28,<br>                 from /home/melochee/projects/ParaView-bin/ParaView-3.12.0/VTK/GUISupport/Qt/Q4VTKWidgetPlugin.cxx:37:<br>
/home/melochee/QtSDK/Desktop/Qt/474/gcc/include/QtDesigner/customwidget.h:45:34: fatal error: QtDesigner/extension.h: No such file or directory<br>compilation terminated.<br>[  2%] Built target MPIPython<br>make[2]: *** [VTK/GUISupport/Qt/CMakeFiles/QVTKWidgetPlugin.dir/Q4VTKWidgetPlugin.cxx.o] Error 1<br>
make[1]: *** [VTK/GUISupport/Qt/CMakeFiles/QVTKWidgetPlugin.dir/all] Error 2<br>make[1]: *** Waiting for unfinished jobs....<br>[  3%] Built target vtkexoIIc<br>[  4%] Built target protobuf<br>[  5%] Built target vtkCommon<br>
make: *** [all] Error 2<br><br>