Just an FYI for my fellow Cubase users who are using a PreSonus Studio 192 or Studio 192 Mobile audio interface.
There seems to be an issue with the recent firmware upgrade. So make sure you check out their forum before applying it. I wish I did. Yikes! 
Regards 
Update…
PreSonus has taken down the UC software (v2.9) and associated firmware update and I’m sure they will fix it. But, if you are having issues after installing the firmware released on 9/13/2018 make sure that you issue a support ticket so PreSonus will assist you. FYI… I received very good customer support. 
Regards