I have this very annoying problem with my setup which works on Nuendo 4.The problem is everything works fine but suddenly the playback from my left channel monitor stops automatically and comes back automatically…If i press the PFL button on my right channel in my mixing console the playback comes from both channels which shows there is no problem with the monitor but there is some other problem which i am not able to figure out…I have a SOUNDCRAFT EFX12 MIXING CONSOLE,M-AUDIO M-TRACK AUDIO INTERFACE AND KRK ROKIT 5 POWERED MONITORS…Please help me with this issue…