Hi Joe,

It literally means you need to have at least one MediaLab questionnaire (aka .que file) in your experiment. This might be a simple post-test or if you do not need to ask any questions, just throw in a dummy questionnaire like the self-esteem questionnaire that comes as part of the basic MediaLab sample and delete all but one of the items like the "thanks for coming" screen.

Hope that helps!
Blair

ps., thanks for the thumbs up on DirectRT