ParaView / VTK XML readers do not handle an increase in file version correctly.
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
Start ParaView vi ExternalData/Testing/Data/ghost_cells.vtu Change version to 3.0 Load this file in ParaView ParaView tells you that 'A reader for ghost_cells.vtu could not be found'
If the file is selected from File / Recent Files you see the right message in the 'Output Window'.