Hi,

A few possible causes worth checking:

• Check the Unreal/Aximmetry log for warnings like missing bUsedWithInstancedStaticMeshes=True or errors referencing FInstancedStaticMeshVertexFactory. Those messages have appeared in similar Aximmetry forum reports involving missing foliage materials: https://my.aximmetry.com/post/1097-missing-texture 
  Open the foliage master materials, make sure Used with Instanced Static Meshes is enabled, and then save them. It is worth checking this setting in the materials even if you do not see any related errors.
  Also, you could check what Material Domain the material uses. For example, the additive blend mode can cause issues in some cases.
  
  
• Try cooking the project again from scratch. If Iterative Cooking is enabled, turn it off first:
  
  Try a clean rebuild by deleting the Intermediate, Saved, Binaries, Build, and DerivedDataCache folders, then cook the project again. It is a good idea to make a backup before deleting them, just in case.
  
  
• It is also worth testing outside Cooked mode. Editor Data connection mode works directly from the Unreal project data and avoids cooking altogether, which makes it a good way to confirm whether the issue is cook-related. This feature was introduced in Aximmetry 2025.2.0.
  
  
• If the project uses AR, actors must be tagged with "AximmetryAR", and any dynamically spawned actors must be followed by an Update ARObjects call: https://aximmetry.com/learn/virtual-production-workflow/ar-production/unreal-scene-setup-ar/#dynamically-spawned-models-and-actors 

Warmest regards,