I’ve identified an issue in the Navdata database that renders all published waypoints invalid. This issue is the result of the FAA deprecating the Navdata file type that AltitudeAlert uses. I’m working on an update that will utilize multiple Navdata file types and will have an update out as soon as possible. A short term workaround is to manually enter the published waypoint via the User Defined Waypoints section. See the User Guide for details. 

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