[LE] NPC not appearing in-game, but the quest marker above its head is

[PorkyPants01]

Hello!

I'm currently following Bethesda's CK tutorial and am on the 'Loose Ends' section of Quest Fundamentals. I've been following it very closely and it has all worked perfectly up until now.

Specifically, I am on the 'Out of Order' section and it is asking me to initially disable the thief NPC up until stage 10 of the quest. Before starting the quest (recovering Bendu Olo's amulet from the thief), the thief does not appear in ReachwindEyrie01 cell, so this bit works. However, when I accept the quest from Bendu, the thief NPC still doesn't appear in ReachwindEyrie01, although the game seems to recognise that he should be there as the quest marker in-game points just above where he should have spawned.

I have a feeling this may be something to do with the issue that lots of others have been having with this part of the tutorial. Earlier in the tutorial, in the 'Map Marker' section, it asks you to create an ObjectReference. I have seen lots of others across different forums say that adding an ObjectReference property called 'DungeonMarker' to the Stage 10 script (as the tutorial says to do) results in a compilation error in the cell ReachwindEyrieExterior01. However, this alone hasn't caused me any issues as when trying it out in-game, the map marker appears at ReachwindEyrie anyway. It seemed to do it itself. This is the error that appeared, though, when trying to make this map marker:

Starting 1 compile threads for 1 files...
Compiling "QF_GSQ01_01009B56"...
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(64,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(64,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(64,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(64,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(66,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(66,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(66,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(66,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(68,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(68,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(68,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(68,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(70,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(70,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(70,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(70,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(72,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(72,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(72,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(72,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(74,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(74,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(74,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(74,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(76,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(76,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(76,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(76,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(78,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(78,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(78,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(78,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(80,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(80,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(80,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(80,25): script property DungeonMarker already has a set function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(82,25): script property DungeonMarker already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(82,25): script variable ::DungeonMarker_var already defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(82,25): script property DungeonMarker already has a get function defined
D:\Steam\steamapps\common\Skyrim Special Edition\Data\Source\Scripts\temp\QF_GSQ01_01009B56.psc(82,25): script property DungeonMarker already has a set function defined
No output generated for QF_GSQ01_01009B56, compilation failed.

Batch compile of 1 files finished. 0 succeeded, 1 failed.
Failed on QF_GSQ01_01009B56

This error, strangely, also comes up when trying to add this script to Stage 10 of the GSQ01 quest, as the tutorial asks. It just won't compile!

Alias_Thief.GetReference().Enable()

I'm not sure if this is connected to why my thief NPC will not appear, but this is the only thing I can think of that it could be. I have initially disabled the thief reference as well as checked 'Allow Disabled' in the thief reference alias, as the tutorial asked.

This is what it looks like in-game. The thief should be stood there.

I appreciate this is a long post, but I would be very grateful if anyone could help me. It's very irritating!

Here is the link to the relevant tutorial: https://www.creationkit.com/index.php?title=Bethesda_Tutorial_Quest_Loose_Ends

Again, thanks for any help!!