The installer for FARR 2.00.108 is supposed to shut down any running FARR while installing. That didn't work here. It somehow shut down something, but the tray icon stayed and I had to click my way through a ton of access violation and other error popups. I canceled setup then, restarted Windows, exited FARR myself and run the setup.
That's not really a problem, but since it's meant to be a feature, I thought I'd mention this bug.