Audition CC no sound
Hello, I recently began using Audition CC 2017. While editing a project, the audio stopped playing back. I checked that the volume on my computer is fine because other programs can play sound. I also checked that the track I want to hear is unmuted. When I click play, I see movement indicating sound in the little vertical bar next to the track I want to hear, but there is no reaction from the horizontal 'level' bar at the bottom of the screen.
I read several answers to this type of question and tried toggling Audio Hardware and Audio Channel Mapping, but everything seems fine and connected there. Also the problem started without my plugging/unplugging from speakers or headphones. I also checked that this problem happens for any track in my project.
Please see a screenshot of my project below. Your help is much appreciated!

