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

4 Likes
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.

6 Likes
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
2 Likes
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.

6 Likes
12

If you’re getting this error, you can try adding this to your DefaultEditor.ini:

[CookSettings]
CookContentMissingSeverity=Warning

That downgrades the error to a warning. If it was spurious you’ll be okay, if not you probably won’t be :-D.

19 Likes
13

Thanks, this allowed me to successfully cook and verify that my ~200 “content is missing from cook” errors are indeed spurious.

1 Like
14

Solved my packing with Quixel Bridge assets for Android, thank you so much!

1 Like
15

Thank you so much.

1 Like
16

Worked for me, Thanks.

17

For all of you still facing this issue it has been resolved in 5.4.2.
Found last in the change list → 5.4.2 Change List
[UE-213910 Cook error (Content is missing from cook) raised when cooking deep blueprint hierarchy]

2 Likes
18

I had the same issue, 5.4.2 did not fix it.
One of my asset title contained an accent, rename it solved the issue

2 Likes
19

I’ve fixed it.

In my case, I recreate all the materials from ground up. I think there are some changes between 5.3 and 5.4 that material files are changed and migrating doesnt fix it automatically.

1 Like
20

TRY THIS >>> I THINK ITS USEFUL

cook
cook2600×1463 338 KB

3 Likes
21

UE5.4.3 it is not fixed yet

2 Likes