Sound working but a specific project not playing any sound

Hey guys, I have a project that will not play any sound in the current project layout. If I write a new audio track, or import a new sound to the current no sound project, ONLY the new audio will play. Other projects work fine, and I have opened the no sound project in C8.5, also with no sound. No signal displaying in cubase, and no signal displaying on my sound card LCD. Sound works in windows. It just seems to be this particular project that has bugged out. I dont know where to start trouble shooting and what to try in this situation.

I have a short 20 second 9mb video to shows what I mean. IS there another way to get it it uploaded here? I have uploaded it via wetransfer here:

Thanks for your time.