LogCook: Error: Content is missing from cook. Source package referenced an object in target package but the target package was marked NeverCook or is not cookable for the target platform.

General Feedback & Requests
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1

During the cook process of packaging I get a bunch of these errors? I tried using this cook settings and without: -AdditionalCookerOptions=“-cookprocesscount=4”. 1Either way I see errors. Sometimes without that multi-thread cook setting, it works, but not always.

LogCook: Error: Content is missing from cook. Source package referenced an object in target package but the target package was marked NeverCook or is not cookable for the target platform.
    Source package: /Landmass/Landscape/BlueprintBrushes/Materials/Sprite/M_BrushSprite_01
    Target package: /Engine/EditorResources/S_Terrain
    Referenced object: /Engine/EditorResources/S_Terrain
2

I too am facing this. My project doesn’t even use Landmass. Still, it seemed to be ticked in the plugins window in the editor. Unticking it seemed to solve the issue.

3

Same problem here on another asset not related to landmass,

UATHelper: Packaging (Windows): LogCook: Error: Content is missing from cook. Source package referenced an object in target package but the object was stripped out of the target package when saved.
UATHelper: Packaging (Windows): Source package: /Game/A_DarkEvil/Maps/WP/L_DarkEvill_WP_OK/Generated/7JC11A382LKLD2L2RX43207AC
UATHelper: Packaging (Windows): Target package: /AscentCombatFramework/Blueprints/AI/AIs/ACFAICharacterBP
UATHelper: Packaging (Windows): Referenced object: /AscentCombatFramework/Blueprints/AI/AIs/ACFAICharacterBP.ACFAICharacterBP_C:ACF Effects Manager Comp_GEN_VARIABLE

1 Like
4

Same issue here are you on unreal 5.4 by chance this might be a issue with 5.4

5

I managed to fix a few of my assets with this issue by

  1. Marking the variable with the error as editor only compiling.
  2. Unticking editor only and compiling agian.
    3.Packaging/Cooking Content agian.
6

I have it on 5.4, fine on 5.3.2

7

I get multiples of the same error as OP, mainly about Landmass but some others too.
The fix/workaround that works for me is:

Project Settings → Packaging → Advanced → Uncheck “Exclude editor content when cooking”

Not sure yet of the consequences but at least packaging works and my build plays as expected.

8

Exclude Editor Content didn’t work for me. I had some meshes and sounds referenced in Engine that refuse to cook for Android. No idea why, fixed it by:

1 - Moving them into my plugins/project so they get re-referenced
2 - Then re-running Setup.bat restores the original engine copies that I moved.

1 Like
9

I also have this problem in 5.4.1. I made a copy of my 5.2 project (which packages fine), tried to package, and I get about ~200 of the “Content is missing from cook” errors that look similar to this:

UATHelper: Packaging (Windows): LogCook: Error: Content is missing from cook. Source package referenced an object in target package but the object was stripped out of the target package when saved.
UATHelper: Packaging (Windows):    Source package: /Game/Blueprints/Story/StoryInteractable_Core_MistVault
UATHelper: Packaging (Windows):    Target package: /Game/Blueprints/Story/StoryInteractable_Core
UATHelper: Packaging (Windows):    Referenced object: /Game/Blueprints/Story/StoryInteractable_Core.StoryInteractable_Core_C:BlockerCapsule_GEN_VARIABLE
10

(post deleted by author)

11

I’ve found a solution from this post.
https://forums.unrealengine.com/t/quixel-megascans-fails-to-build-to-the-apple-vision-pro-in-5-4/1819932/4?u=rayhans

I was getting the problem from this two plugin.
Epic Games\UE_5.4\Engine\Plugins\Bridge\Bridge.uplugin"
Epic Games\UE_5.4\Engine\Plugins\Interchange\Runtime\Interchange.uplugin"

So I just edited the files and added “Android” in the SupportedTargetPlatforms for my android build. And it fixed the issue.