One thing that might play some part in the problem is that Albatross IV is still called Coromuel in some instances—at least in the GM Beta.
Her folder in Entities > Ships is “Coromuelâ€, and she appears as Coromuel in the Mission Editor list of Player ships.
Normally, this is not a problem—she appears in the free roam list as Albatross IV even though removing the Coromuel folder removes her.
Missions made with Coromuel as the player ship are accepted by the game.
Occasionally, though, something goes wrong. It is as if she loses her newly acquired bridge. Similarly, Bangalore is listed in the editor as a player ship, but lacks a functioning bridge—missions using her as a player ship can’t run.