ENH: Switching out the error where the labeller can't find the array to a warning with slighly more descriptive text.
ENH: Switching out the error where the labeller can't find the array to a warning with slighly more descriptive text.

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