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Harry and Mike, I forgot to update the $GEMTBL/grid/grdnav.tbl file in the gprcm.tar.Z package for the RCM grid navigation yesterday. I'm sending you this message because both your sites downloaded the tar file before I noticed my omission. I have fixed the tar file this morning. You can update your $GEMTBL/grid/grdnav.tbl by adding the line: RCM 906 STR 90 -105 0 23.090 -119.036 45.619 -60.000 113 89 3.75 0 (or download and unpack the tarfile again...it will update the grdnav.tbl file). Without the grdnav.tbl update, gprcm will report that #906 isn't found. Sorry for the omission. Steve Chiswell