Partially reading of NAS files

Setup: miniDSP SHD and ReadyNAS duo V2

I have changed my HDs and downloaded all my music to the new HDs. With my old HDs everything is running normal.

Now i can only read approx. 1/10 of my music. I can see all my files when i access my NAS server.

I can’t see what i do wrong.

Any suggestions?

Best regards