Cubase Artist 8 on my imac has stopped recording

My recording has just stopped! All settings are correct i’m sure. I can hear myself through the mic going through my focusrite interface, but there is no signal showing on the track and when i go to records its just a flat line…no waves. its all set correct in the VST connections and in the corresponding tracks. I’m really confused and very frustrated so any help really appreciated. :slight_smile:

And you recently switched to Mojave maybe…?