Jennie, I believe that your regex for the second is the problem since you are using * instead of .*. Try a simpler: CONDUIT <tab> MT.gfs.*onedeg <tab> PIPE <tab> decoders/dcgrib2 -d data/gempak/logs/dcgrib2_CONDUITgfs.log <tab> <tab> -e GEMTBL=/home/gempak/GEMPAK5.9.1/gempak/tables (the 2 tabs on the 3rd line are for readability only, 1 tab would suffice). This presumes you have a ~ldm/decoders directory and have linked or copied the GEMPAK decoders from $GEMEXE into that directory or course. Steve Chiswell Unidata User Support Ticket Details =================== Ticket ID: GUX-304848 Department: Support GEMPAK Priority: High Status: Closed