EarthOnly system crashes upon ground contact

[AMPW]

Game Version​

2026.5.11.4462

Operating System​

Windows 11

What Happened​

Game crashes upon ground contact with the earth because the "LunaGroundDiffuse" particel texture is not loaded for the "RockParticle" PbrMaterial.
The same PbrMaterial also requires the "LunaGroundNormal" and "LunaGroundAoRoughMetal" which are also not loaded and will crash the game if the diffuse texture is loaded.

What Was Expected​

No game crash?

Reproduction Steps​

1. Load KSA with the earth only system
2. Land on earth
3. Game crashes

Reproduction Rate​

Always

Additional Info​

• The game does not crash when the rocket starts on the ground but it does crash as soon as the rocket touches the ground again
• Starmap shows that the crash comes from particel emitter system, see the attached log file
• The "LunaGround..." textures have only a path specified in the Luna and Venus planetary body elements
• Specifying the path in the PbrMaterial solves the issue