(Windows 10 updates may be the root cause, but in case they're not..!)
The latest version of Vienna Ensemble Pro 6 has stopped working altogether, with a RME UFX and various USB MIDI devices, on Windows10 x64 Pro. This has worked flawlessly until now.
As a control test, I have run it with Ableton 9.7 x64 and it works without any issues.
It *SEEMS* to be the interaction between the Panel (48kHz, 128byte buffer) and the Host preference (48kHz, 128byte buffer), when ASIO Fireface UFX is selected as the audio engine. It reports it cannot start the audio engine? I see no incoming MIDI activity either, yet you can see it in MIDI-OX.
The one time I have seen it work was 44.1kHz and 128byte, but no sound came out.
The error logs point to faulting plugin dlls - but it's more likely they got stuck because of the engine and are not the cause.
So far -
I downgraded to 1.98 of the RME USB driver - no good. Upgraded back to 1.99. Latest firmware is installed.
Renistalled Vienna - no good.
Repathed the USB cable via another port - no good.
Tried other clock settings - no good.
Nothing obvious in the event logs.
I am not sure why the ASIO interaction should have failed - it's been solid to now, Help appreciated.