It the tutorial video you load skyrim.esm without any errors.
But I got this

MASTERFILE: NavmeshInfo 00028e37 has no parent space, ignoringMASTERFILE: Automatic door 'ShipTrapdoor01MinUseHidden' (00099315) [0 units] in cell 'Wilderness' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'ShipTrapdoor01MinUseHidden' (00061435)Ref: '' (00099315)Cell: 'Wilderness' (0000967A) (2, -6) in world 'Tamriel' (0000003C)See Warnings file for more information.MASTERFILE: Automatic door 'AutoLoadDoor01' (00015E1D) [324 units] in cell 'YngolBarrowExterior' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'AutoLoadDoor01' (00031897)Ref: '' (00015E1D)Cell: 'YngolBarrowExterior' (0000B452) (38, 11) in world 'Tamriel' (0000003C)See Warnings file for more information.MASTERFILE: Automatic door 'AutoLoadDoor01' (0001779F) [125 units] in cell 'KarthwastenExterior03' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'AutoLoadDoor01' (00031897)Ref: '' (0001779F)Cell: 'KarthwastenExterior03' (0000707A) (-34, 9) in world 'Tamriel' (0000003C)See Warnings file for more information.MASTERFILE: Automatic door 'WRShackDoorMinUse01' (0006767F) [48 units] in cell 'WhiterunExterior10' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'WRShackDoorMinUse01' (000FE471)Ref: '' (0006767F)Cell: 'WhiterunExterior10' (000095DA) (7, -1) in world 'Tamriel' (0000003C)See Warnings file for more information.MASTERFILE: Automatic door 'dunda14PortalDoor01' (0003DC3F) [287 units] in cell 'DA14Interior' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'dunda14PortalDoor01' (0003DC41)Ref: '' (0003DC3F)Cell: 'DA14Interior' (0003D62B)See Warnings file for more information.MASTERFILE: Automatic door 'AutoLoadDoor01' (00015D12) [307 units] in cell 'WolfskullCave01' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'AutoLoadDoor01' (00031897)Ref: '' (00015D12)Cell: 'WolfskullCave01' (000151F6)See Warnings file for more information.MASTERFILE: Automatic door 'HelgenKeep01btoExteriorREF' (000909D2) [275 units] in cell 'HelgenKeep01' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'ImpDoorSingleLoad01' (0004203A)Ref: 'HelgenKeep01btoExteriorREF' (000909D2)Cell: 'HelgenKeep01' (0005DE24)See Warnings file for more information.MASTERFILE: Automatic door 'HelgenKeeptoExterior01REF' (0005DF95) [304 units] in cell 'HelgenKeep01' has its teleport marker too close to the linked door.MASTERFILE: Errors were encountered during InitItem for reference:Base: 'ImpDoorDoubleLoad01' (000439C4)Ref: 'HelgenKeeptoExterior01REF' (0005DF95)Cell: 'HelgenKeep01' (0005DE24)

It works when I press ok ok ok ok ok... But I was confused by all these errors

Yep I think they edited that portion of the loading out when making the tutorial --- The errors seem to mainly be teleport door markers that are just placed incorrectly in the OB.esm file so the editor is warning about it -- hopefully Beth will fix the things so the CK can eventually be loaded without all of those errors but for now just hit Yes to all and it will work OK.

If you watch that video, you'll notice that it conveniently skips past the loading process. No doubt to save time and get to the point.

The Morrowind CS (after Tribunal and Bloodmoon) and Oblivion CS did the same thing. Just click "Yes to all" or "Cancel" and it will ignore the errors.

As far as I can tell, they are harmless.

I also wonder if a lot of the errors in the ESM are bing triggered by things placed in placeholder or dummy cells that the player will never actually enter. Things that other parts of the game need to reference so they have to exist SOMEWHERE.

Thank you. These errors isn't critical and i can ignore them. Right?