executed flight plan generates no flights

I had a plane in use, put it up for sale, then changed my mind and started a new schedule. I had to pay for my cabin config again, which I did, but no matter what I do, since then, no flights get registered. The flight plan has been properly executed several times but even after 24h, not a single flight shows up in the list for that plane.

I have 5 other planes in use, all work fine. Any idea what I might be doing wrong?

EDIT: Mods please remove my post. Problem resolved upon 20th attempt, not sure what happened.