Invalid font file in Windows

Hi,
I’ve exported my font family, which works fine in OSX, but when I try to install in WIndows, I get a dialog that says it’s an invalid font file. My friend Judy Aasen-Safren suggested there was something wrong with the table, and suggested Font Chef, but I have no idea how to use it or the older font validator. I don’t even know what a font table is. Can you help a n00b?

You can try running Update Glyph Info from the Glyph menu.

Font Chef as in https://www.trademarkia.com/font-chef-78433450.html?

Inside the font file, all information is organized and stored in tables. Each table has a name and a four-letter tag. And each table has special requirements. More info: http://www.microsoft.com/en-us/Typography/OpenTypeSpecification.aspx

Windows may audit some info in some tables to decide whether the font is OK or not.

Download Font Validator 2.1.1:
https://github.com/HinTak/Font-Validator/releases/download/FontVal-2.1.1-py/Mac.OS.X.FontValGUI-Seifert-2.1.1.zip

Run the tests, look for the (red) errors.

Read the naming tutorial:
https://glyphsapp.com/tutorials/naming