Packaging error 5.4.4 Ensure condition failed: Materials.IsValidIndex(Section.MaterialIndex)

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1

Hey, I recently migrated a project from Unreal Engine version 5.3 to version 5.4.4. While I was able to resolve several issues encountered during the migration, one problem remains that prevents me from packaging the project.

The error message is as follows:
LogOutputDevice: Error: Ensure condition failed: Materials.IsValidIndex(Section.MaterialIndex) [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\SkeletalMeshLODModel.cpp] [Line: 1499]

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Please, I am really pressed for time, and this issue is preventing us from moving forward. Your assistance would be greatly appreciated.

2

Hi , I got same problem did you fix error ?

3

I’m still looking for it :confused:

4

That works for me, what exactly is your error?

5

Same as your error, probably you have LOD for your skeletal mesh Can you check it "Skeletal Mesh Materials "?

6

Hi, sorry for the delayed response. I did have an issue with a skeletal mesh, but it wasn’t being used in the project. Check the errors you get when you launch the project, or by doing a cook. I spotted it through one of these two methods. This will help you identify it. As for resolving it, I simply deleted it.