Same problem here. I have two Fun Cube Dongles Pro that seem to work with SDRSharp. Connected to two LNA to 432 MHz Yagis for EME. For kicks I copied/pasted the two '5' files as '4' files, rebooted, restarted MAP65 and the same.
When I use my IQ+ it gives me a message 'Failed to open Si570', so I don't have a way to use MAP65 either way.
If you or someone in the group have any ideas please let me know I how to get the EME signals decoded the good days are coming fist week in April for EME DX..