Roon no longer starting post-upgrade

Roon Core Machine

HP EliteDesk, i7, 24GB RAM

Networking Gear & Setup Details

Google Nest over Verizon FIOS - no active VPN

Connected Audio Devices

NAS via USB; remotes on iOS

Number of Tracks in Library

20000 or so

Description of Issue

Core won't start, so I can't tell you which build. I ran the upgrade to 2.0, it launched but then crashed, then would not fully open the application. Uninstalled and reinstalled, same result. Logo flashes indefinitely, but home screen never loads.

I had this problem with my Dell XPS 15 Windows 10 laptop. Finally, after 8 reinstalls, I just went into Windows and deleted Roon from the computer, but kept data and settings. Then, I reinstalled Roon 2.0 and all it good.