Jesse Chunn

I have 10 video tracks in a project (with associated audio). At some point, soon after deleting a couple of tracks, none of the video tracks will show up in the preview unless the "solo" option is selected. When NONE of the tracks have solo selected, nothing shows up in the preview. None of them are "hidden" (using the little eye icon next to the solo button). I am wondering if maybe one of the deleted tracks was set to "solo" and now all the remaining tracks think there is a solo video somewhere, even though there is not? Anyway, any help would be greatly appreciated. I have put many hours into this project and I would really rather not have to start over.