Hi again, second problem. Loading nco/2.9.9 After I do : > module add nco/2.9.9 Then I try to use ncdiff : ncdiff ptr_flux_tave.0000622080.t014.nc ptr_flux_tave.0000622080.t015.nc diff ncdiff: error while loading shared libraries: libcurl.so.2: cannot open shared object file: No such file or directory Thanks in advance again. Manfredi