Thanks Nigel
I have tested on our second Carbonite and have the same issue.Were your tests with a Yamaha o1v96?
If I roll back the upgrade the audio follow video works fine.This happens with 2 different carbonites and 2 different O1v96 audio mixers.
The problem is when i try to add the device with device manager I push confirm but the settings are not retained no audio mixer has been added?
I contacted support in February and was promised it would be looked into.
#Carbonite