Mixer is not working

Which mixer, more details pls.

Yeah... a bit more info is going to be necessary to start any kind of troubleshooting. Thanks.

hi all ok  support  im having problems  with  headphone mixer/cue  not  working iv looked  in midi settings and cant  seem to assign it  

were it got  deck  there no  deck option  for  me to change to each deck just says not assigned ...fix  please  if you  would be so kind