App is invalid or damaged


I just purchased Glyphs 2 as an upgrade from the App Store version. I downloaded the app via the link sent in an email after purchase. When I open the app I get the error “This app is invalid or damaged. Please redownload the app from”. I’ve done that and still get the error.

Can you decompress the downloaded .zip file with the system archive tool? Some other decompression tools disturb the app.

That did it. Thanks!