I am a 67 year old newbie who has just started using Cubase LE4 which came with my Tascam US-144. When I am using playback, the sound simply drops out. The only way to get it back is exit from the project and also exit from Cubase. I then reload Cubase and it is fine (for a short time e.g. ten minutes etc.) and then it happens again. Is there something which I am doing or not doing.