Okay, found some info on gfortran updated for gcc4.6. the solution is posted here http://www.unidata.ucar.edu/software/gempak/tutorial/runtime_errors.html the source and table packages have been updated. the new Makeinc.linux64_gfortran file can be found here http://github.com/Unidata/gempak/blob/master/config/Makeinc.linux64_gfortran -Michael Ticket Details =================== Ticket ID: JZH-369433 Department: Support GEMPAK Priority: Normal Status: Open