After reading this thread, I have removed Bome Midi Translator, RTPMidi and any other audio or midi driver that may have caused conflicft. Since the log above shows a bomb on the WASAPI wave driver, which my Scope cards do not support, I would guess that’s the issue.
Is it possible to set a config option to skip drivers that cannot be accessed on a system? Bidule recently added this (as well as registry entries on Win & application support entries on Mac) as a troubleshooting method, and this is very useful.