Hello! If I execute my script testview.jnl twice, ferret terminates with a segmentation fault. $ ferret NOAA/PMEL TMAP FERRET v5.80 Linux(g77) 2.4.20 - 01/03/05 7-Feb-06 15:48 yes? go testview.jnl go portrait use coads_climatology def view/axes/xlim=0.2:0.5/ylim=0.2:0.5 v1 set mode metafile set viewport v1 fill/l=1 sst xx (ASSUME THAT THIS IS SOME ERROR) **ERROR: unknown command: xx xx Command file, command group, or REPEAT execution aborted yes? go testview.jnl (MY SECOND TRY) go portrait use coads_climatology def view/axes/xlim=0.2:0.5/ylim=0.2:0.5 v1 Re-defining viewport V1 set mode metafile set viewport v1 Segmentation fault $ It works fine when I try this by removing (1). go portrait (2). set mode metafile /cancel mode metafile (keep go portrait) Thanks Prasad