Wavelab 9 Elements does not work with MOTU UltraLite AVB

I’m working on a Mac with a MOTU UltraLite AVB and I just bought WaveLab 9 Elements.

When I try to play an audio file a pop-up appears saying: “The VST audio connections are not valid. Check the VST Audio Connections dialog” (see attached screenshot)
WLE9 identifies my MOTU UltraLite AVB and all adjustments in the connections dialog seem to be correct.

  • I also use Cubase Pro 9. There never occurred such a problem.

  • When I use the built-in audio-card (MacBook Pro), everything works fine, too.

Any ideas or suggestions?
Thanks, Steffen.


MacBook Pro, Sierra 10.12.3 (latest)
MOTU Firmware 1.2.8 +378 (latest), Driver Mac 2.0.0+71997 (latest)
WaveLab 9 Elements (9.0.35, latest)
Screen Shot 2017-03-27 at 20.11.02.png

Hello Sir,
I have the same problem, did you found any solution maybe ?
Thanks a lot