Payload Says invalid or corrupted even after multiple installs and different versions

[Scarlet698-me]

When trying to install this when i try to open the payload through the bootloader it says that its invalid even after reinstalling 2x and trying a previous version, however opening gm9 works just fine

[moutella]

Just had the same issue - was uncompressing using macOS finder, and it would complain about being corrupted. Uncompressed using 7zip on windows and it worked fine

[apburgess]

Uncompressing with Keka (GUI) or 7Z (command line) on macOS also works.