OpenPHT crashing issue

Recently bought a new PC with Windows 10 and installed Plex server and OpenPHT and old Plex Home Theater as I am used to it. However both OpenPHT and Plex Home Theater keep crashing unexpectedly after couple seconds or when I start any movie or series from it … never had that issue on old PC. They just close and vanish … every single time … anybody had such issues ?