Volume visualization works only with the first Exodus block.
If the Exodus data contains multiple blocks, the "Volume" feature only visualizes the first block, even when two blocks are selected. If the first block is not selected, but the second is, an error message is displayed:
ERROR: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-release_superbuild/build/superbuild/paraview/src/VTK/Common/DataModel/vtkDataObjectTree.cxx, line 318
vtkMultiBlockDataSet (0x151f2f70): Invalid iterator location.
ERROR: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-release_superbuild/build/superbuild/paraview/src/ParaViewCore/VTKExtensions/Rendering/vtkVolumeRepresentationPreprocessor.cxx, line 71
vtkVolumeRepresentationPreprocessor (0x143d6d30): Could not extract a dataset from multiblock input.
ERROR: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-release_superbuild/build/superbuild/paraview/src/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkCompositeDataPipeline (0x151ce420): Algorithm vtkVolumeRepresentationPreprocessor(0x143d6d30) returned failure for request: vtkInformation (0x151cd4a0)
Debug: Off
Modified Time: 187098387
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0