Hang or Crash when Launching MOTU PCI ASIO Control Panel

Hi

My Cubase Pro 8 trials continue …

If I go into Devices -> Device Setup -> MOTU PCI ASIO (my audio driver) ->Control Panel, Cubase 8 either crashes or hangs pretty much every time.

No such issue in Cubase 7.latest or Nuendo 6.5.latest.

I seem to be going round in circles with Cubase 8. Every basic function I try and perform results in an issue.

Thanks for any help.

Jules