Hi Jim, In the alpha release, ncgen doesn't parse all the new netCDF-4 constructs that ncdump generates for things like Groups and user-defined structures. This will eventually work, but isn't there yet. Thanks for help in testing the alpha release. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: OAL-252466 Department: Support netCDF Priority: Normal Status: Closed