I ran into an issue when I set an import folder and 2500 files were imported. The app hung up and when I closed the program to restart it would not load. All the background processes were running but nothing was loading. I tried everything, uninstall, reboot, install, reboot, even tried a total removal, registry entries databases and everything. Placed a tech support ticket (still waiting guys) - Anyway, suddenly it hit me, try the legacy. I did, and it loaded everything, then I found an earlier download of 10.15 version and installed it. The damn thing worked, so after it loaded I checked update and installed the latest version and its all back to normal.
Try this, maybe it works, you just have to have a saved an older downloaded installation hanging around your archives.
Bye