As soon as the visibility tool is used, we're adding references to the  "/Engine/EditorLandscapeResources/DataLayer" asset from landscape components.

If the user decides to cook without editor data, we ignore all assets whose paths starts with "/Engine/Editor". Warnings will be outputted, but the map can run without issue.

There are a few possible solutions to remove the warnings:

1) Remove reference to this layer during cook

2) Rename this layer to something else (/Engine/LandscapeResources/) so that it ain't treated as editor data anymore. A solution will be needed for existing data.

Steps to Reproduce
  • Create a new map
  • Create a landscape
  • Apply a material that support masking
  • Paint using the visibility tool so that a visibility layer is added
  • Cook map without editor data (-SkipCookingEditorContent?)


Will result in the following warnings during cook:


LogSavePackage: Warning: /Game/Level/Map/Terrain/Island_Terrain imported Serialize:/Engine/EditorLandscapeResources/DataLayer.DataLayer, but it was never saved as an export.
LogSavePackage: Warning: /Game/Level/Map/Terrain/Island_Terrain imported Serialize:/Engine/EditorLandscapeResources/DataLayer, but it was never saved as an export.



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Won't Fix
CreatedMay 21, 2020
ResolvedAug 31, 2021
UpdatedAug 31, 2021
View Jira Issue