B3V2 does'nt have a ALL midi channel setting like you mention. So where do you set midi channels?
Have you set your controller to send on midi channel 1? And are you sure, that you pass midi channel 1 through your DAW, if you use it in a DAW?
If you have done this, then i suggest you try a reinstall of B3V2. It should work.
If you use AU, and it does'nt work with them, but it work with the standalone application, then it can be plugin related. In that case i suggest you contact Arturia support.
I'm on Windows.
However, i assume more would report failure like this, if it's a OS or AU issue. Can't be sure though.
Cheers.