Sedov Blast example ICs

Something is wrong with the ICs as they can't be read when running with MPI.

Error message is:

HDF5-DIAG: Error detected in HDF5 (1.8.14) MPI-process 3:
  #000: H5Dio.c line 173 in H5Dread(): can't read data
    major: Dataset
    minor: Read failed
  #001: H5Dio.c line 436 in H5D__read(): src and dest data spaces have different sizes
    major: Invalid arguments to routine
    minor: Bad value
[000] parallel_io.c:readArrayBackEnd():154: Error while reading data array 'Masses'.
application called MPI_Abort(MPI_COMM_WORLD, -1) - process 3
HDF5-DIAG: Error detected in HDF5 (1.8.14) MPI-process 1:
  #000: H5Dio.c line 173 in H5Dread(): can't read data
    major: Dataset
    minor: Read failed
  #001: H5Dio.c line 436 in H5D__read(): src and dest data spaces have different sizes
    major: Invalid arguments to routine
    minor: Bad value
[000] parallel_io.c:readArrayBackEnd():154: Error while reading data array 'Masses'.
application called MPI_Abort(MPI_COMM_WORLD, -1) - process 1
HDF5-DIAG: Error detected in HDF5 (1.8.14) MPI-process 2:
  #000: H5Dio.c line 173 in H5Dread(): can't read data
    major: Dataset
    minor: Read failed
  #001: H5Dio.c line 436 in H5D__read(): src and dest data spaces have different sizes
    major: Invalid arguments to routine
    minor: Bad value
[000] parallel_io.c:readArrayBackEnd():154: Error while reading data array 'Masses'.
application called MPI_Abort(MPI_COMM_WORLD, -1) - process 2
HDF5-DIAG: Error detected in HDF5 (1.8.14) MPI-process 0:
  #000: H5Dio.c line 173 in H5Dread(): can't read data
    major: Dataset
    minor: Read failed
  #001: H5Dio.c line 436 in H5D__read(): src and dest data spaces have different sizes
    major: Invalid arguments to routine
    minor: Bad value
[000] parallel_io.c:readArrayBackEnd():154: Error while reading data array 'Masses'.
application called MPI_Abort(MPI_COMM_WORLD, -1) - process 0