Hi S

Sometime ago, I experienced a similar problem and it turned out that I had formatted the SD Card using the PC.

Apparently, it is always better to format SD Cards in the instrument itself and having done that, give the first Directory or Song File a name (any name will do) which will allow the SD Card Reader to read it and link it to the KN immediately.

Give it a try, it worked for me.

Good luck!

Aud (U.K.)