The creation kit tends to throw warnings at you every time you start it but when you have something like e.g.:
MASTERFILE: Errors were encountered during InitItem for reference:
Base: 'ShipTrapdoor01MinUseHidden' (00061435)
Ref: '' (00099315)
Cell: 'Wilderness' (0000967A) (2, -6) in world 'Tamriel' (0000003C)
What can you do to fix the reference? Chances are that this area will cause trouble ingame.
Cheers
