error reading WRF grib2 files

Hi all,
When I try to plot the WRF output files in GRIB2 format, I get the
following error:

 Copyright (C) 1995-2013 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.1.2
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
warning: Entry (250) not found in code table file
/opt/ncl_ncarg/lib/ncarg/grib2_codetables/centers.table
warning: Entry (221) not found in code table file
/opt/ncl_ncarg/lib/ncarg/grib2_codetables/ncep/4/4.2.0.192.table

The output of ncl_filedump is attached.

¿Where I can find the updated codetables with these tickets?

Thanks,

-- Fernando

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