ok I have waited over a month and installed 9.5.40 . Same problem - “The audio connections are not valid. Check the Audio Connections dialog.” I using the same Motu UltraLite-Mk4 and settings in Cubase 10 Live and Logic. No problem. Its a standard coreaudio OSX audio device. Wavelab works with the iMAC OSX audio but that’s obviously no good to me. wavelab and Motu UltraLite-Mk4 does not work. MOTU say its Steinberg wavelab issue. It pays to demo before buying! as this is an expensive mistake. Support has been no help. I get sent to Australia Yamaha and they say wait for 9.5.40 which I did. Thanks Steinberg!!! You have posted Wavelab is compatible on Mojave. No it’s not.