I am having an issue too, but it is the following message when I select view -> severe weather zones :
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There are no DBF files containing forecast zone definitions. Download them from https://www.weather.gov/gis/AWIPSShapefFiles and unzip them into your configured YAAC tile directory, then it lists my directory.
I did download and unzip all 3 files, county, zone, and marine into the tiledir.?
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What did I miss??