[yoerik]

I think I'm experiencing very similar issues. However, forgive me if I misinterpret the OP.

When I use the Eucon settings in the Windows control panel, to use the Mackie or HUI protocol with external applications, I'm running into crashes as well.

Using the Mackie Protocol, I'm not having any crashes, however it's fader and knob scaling isn't suitable for the software I'm using (Audiokinetic Wwise).

Using the HUI protocol, the software does not recognize the S3 commands at all (using the midi learn function of Wwise). Switching to HUI in the Eucon control panel, as well as launching the external software more often than not triggers a BSOD.

Also, despite my S3 being recognized in Mackie mode by Wwise, my Avid Transport is not recognized at all.

I'm on Windows 10 Pro 64 bit, latest build.