Multi Track won't playback

[defaulttcgm051akehv]

For some reason when I'm working in multi-track mode, when I try and play it back it doesn't play. Playback works fine in the mixdown. Any help would be welcome! Thanks!

[SuiteSpot]

Make sure all your tracks are sending their output to the master track and that the master track's output is set to your audio device outputs (Edit > Preferences > Audio Hardware and also Audio Channel Mapping)