If you're using DoP, you can only play 1x DSD. So if you happen to have 2x DSD files, you'll need to play them as PCM. Look at the 'Sample Rate' column in MC to check. 1x DSD is 2822400 Hz and 2x DSD is 5644800 Hz.
You can configure DSD to play at a sample rate your hardware supports using DSP Studio > Output Format > Sample rate.