The northern islands of Grand Bahama (including Freeport) and the Abacos are in a square on my Dynon screen which does not have any chart showing. This is both for sectional charts and IFR low charts. The missing box is identical for both. The southern island have charts showing. The same happens on a friend of mine’s plane with AFS screens, so I assume it is a Seattle Avionics problem. Any idea what is causing this problem? I have the latest PC Chart Manager software, and Bahamas are checked off to download.