When running a packaged build of a project with a level with a landscape that has a material assigned it will crash (shipping build) or not retain the assigned material (development build).

There is no crash report that appears.

Found in 4.23.0 CL#8386587

Steps to Reproduce

1. Create a new project.
2. Create a new default scene.
3. Create a new material and make it a solid color.
4. Create a landscape and assign the new material.
5. Set the new level to project startup default map.
6. Package two different builds (Development & Shipping).
7. Play the packaged builds.


  • Development: The landscape used the world default material.
  • Shipping: The package crashes (refer to image attached).

Expected: The Landscape material exports with the package and doesn't crash (shipping build).

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ComponentUE - Foundation - Core
Affects Versions4.23
Target Fix4.23.1
Fix Commit9017539
Main Commit9030568
CreatedSep 9, 2019
ResolvedSep 24, 2019
UpdatedOct 7, 2019