I use Windows 10 and run BlackVue Windows PC Viewer V1.22 (latest version and latest firmware V1.10 for DR750S-2CH).
I played a BlackVue clip and it worked fine. But when I double-click another second file during this action, Windows PC Viewer crashes immediately.
The problem seems to be related somehow to the crashes in Windows PC Viewer V1.19 and V1.20.
It's really annoying as I have to restart Windows PC Viewer every time when running the next clip.