[las_users] addXML.sh says 'no grids' on a THREDDS catalog

[Velimir Mlaker1 <mlaker1@xxxxxxxx>]

Hello LAS community,

I am trying to generate the LAS UI for the IPCC model output database. 
I'm running LAS 6.5.2.1 and using the command:

   addXML.sh -t 
http://esg.llnl.gov/metadata/pcmdi/ipcc/thredds/pcmdi.ipcc4.thredds

What I get is:

   No grids were found in the input data sets.
   Check to see if the OPeNDAP servers being referenced are running.
   Verify that the netCDF files referenced are COARDS or CF compliant.

The catalog and filenames are visible without name/password, but the 
files themselves require authentication at server for download. What 
needs to be done to successfully generate the xml user interface for 
this catalog?

Sincerely,
Velimir Mlaker