Helen, I tried building netcdf-4 from source on a Leopard x86 MacOSX platform, and it seemed to build and passed all the test OK, but the result appears to be only a netcdf-3 rather than netcdf-4 binary release, as it didn't link with the HDF5 and zlib libraries. We need to investigate the problem. I'll let you know when we have a gfortran-enabled netcdf-4 binary release for MacOS-X x86 platforms ... --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: YFU-289009 Department: Support netCDF Priority: Normal Status: Closed