I have a very large (36 MB) jpeg file I am trying to bring in to DraftSight as a base image using Insert Reference Image from the pulldown menu.  Using Browse, I can navigate to the file location and it is shown.  When I highlight the file name and hit Import, a thumbnail image of the jpeg appears, then a message "map Scan.jpg Invalid or unsupported  image file" appears and nothing is imported.  The file will open in other programs supporting the jpeg format.  Is there a size limit on Reference images?