Yes, but now I got some debug info on my side 
Navigraph Hub gets an unexpected error (which is obviously currently handled poorly) when opening the file M:\WpSystem\S-1-5-21-3155462289-2520458828-1761853474-1001\AppData\Local\Packages\Community\pmdg-aircraft-737\Config\NavData\cycle.json on your system. Not sure what is the cause but deleting the file should solve the problem. Navigraph Hub with automatically replace it with a new one anyway.
Kind regards,
Markus