Unsupported Volume

After formatting my Survival 64gb Stick , using the 32fat, transferred my crates into my memory stick After it was finished, I ejected from my computer And plugged it into my denon dj mcx8000 usb port And it read " Unsupported Volume ". What kind of problem am I haven’t? Because I really want to use my dj console without my computer. Please, help!

Some usb flash drives have hidden folders, partitions, directories etc which will bring those messages up

You just need to deep format those flash drives so that it’s really totally empty. Or try a different stick , but always high quality