BUG: fix print when object factory is null
BUG: fix print when object factory is null

spthaolt/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,ashray/VTK-EVM,msmolens/VTK,gram526/VTK,hendradarwin/VTK,cjh1/VTK,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,candy7393/VTK,arnaudgelas/VTK,daviddoria/PointGraphsPhase1,SimVascular/VTK,spthaolt/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,Wuteyan/VTK,biddisco/VTK,collects/VTK,keithroe/vtkoptix,sgh/vtk,msmolens/VTK,sumedhasingla/VTK,johnkit/vtk-dev,naucoin/VTKSlicerWidgets,aashish24/VTK-old,demarle/VTK,ashray/VTK-EVM,biddisco/VTK,biddisco/VTK,mspark93/VTK,SimVascular/VTK,candy7393/VTK,daviddoria/PointGraphsPhase1,naucoin/VTKSlicerWidgets,Wuteyan/VTK,mspark93/VTK,cjh1/VTK,collects/VTK,arnaudgelas/VTK,aashish24/VTK-old,arnaudgelas/VTK,mspark93/VTK,collects/VTK,spthaolt/VTK,cjh1/VTK,keithroe/vtkoptix,sankhesh/VTK,johnkit/vtk-dev,johnkit/vtk-dev,hendradarwin/VTK,sgh/vtk,jmerkow/VTK,msmolens/VTK,gram526/VTK,jmerkow/VTK,hendradarwin/VTK,jmerkow/VTK,spthaolt/VTK,jmerkow/VTK,hendradarwin/VTK,keithroe/vtkoptix,mspark93/VTK,demarle/VTK,msmolens/VTK,msmolens/VTK,mspark93/VTK,sankhesh/VTK,sgh/vtk,gram526/VTK,spthaolt/VTK,jmerkow/VTK,candy7393/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,gram526/VTK,naucoin/VTKSlicerWidgets,SimVascular/VTK,sumedhasingla/VTK,msmolens/VTK,johnkit/vtk-dev,gram526/VTK,spthaolt/VTK,collects/VTK,demarle/VTK,jeffbaumes/jeffbaumes-vtk,cjh1/VTK,keithroe/vtkoptix,biddisco/VTK,SimVascular/VTK,collects/VTK,sankhesh/VTK,johnkit/vtk-dev,cjh1/VTK,jeffbaumes/jeffbaumes-vtk,keithroe/vtkoptix,cjh1/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,candy7393/VTK,jmerkow/VTK,gram526/VTK,jmerkow/VTK,demarle/VTK,aashish24/VTK-old,ashray/VTK-EVM,sankhesh/VTK,Wuteyan/VTK,johnkit/vtk-dev,arnaudgelas/VTK,ashray/VTK-EVM,biddisco/VTK,jeffbaumes/jeffbaumes-vtk,aashish24/VTK-old,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,msmolens/VTK,msmolens/VTK,Wuteyan/VTK,spthaolt/VTK,keithroe/vtkoptix,keithroe/vtkoptix,sumedhasingla/VTK,sgh/vtk,mspark93/VTK,johnkit/vtk-dev,demarle/VTK,Wuteyan/VTK,ashray/VTK-EVM,demarle/VTK,daviddoria/PointGraphsPhase1,jeffbaumes/jeffbaumes-vtk,sankhesh/VTK,candy7393/VTK,sgh/vtk,daviddoria/PointGraphsPhase1,hendradarwin/VTK,hendradarwin/VTK,candy7393/VTK,mspark93/VTK,candy7393/VTK,collects/VTK,SimVascular/VTK,Wuteyan/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,sumedhasingla/VTK,ashray/VTK-EVM,aashish24/VTK-old,berendkleinhaneveld/VTK,Wuteyan/VTK,demarle/VTK,aashish24/VTK-old,sgh/vtk,berendkleinhaneveld/VTK,gram526/VTK,demarle/VTK,biddisco/VTK,sankhesh/VTK,candy7393/VTK,SimVascular/VTK,ashray/VTK-EVM,mspark93/VTK,biddisco/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,SimVascular/VTK,gram526/VTK,SimVascular/VTK,arnaudgelas/VTK,arnaudgelas/VTK,sumedhasingla/VTK,sankhesh/VTK,ashray/VTK-EVM