Paragon Corporation wrote: > There was another missing cast. > > CREATE CAST (box3d_extent AS geometry) > WITH FUNCTION st_geometry(box3d_extent) > AS IMPLICIT; Leo, That did the trick. Thanks! Peter -- Peter N. Schweitzer (MS 954, U.S. Geological Survey, Reston, VA 20192) (703) 648-6533 FAX: (703) 648-6252 email: pschweitzer at usgs.gov <http://geology.usgs.gov/peter/>