Physical Material Mask on static mesh causing crash when loading level in Standalone/Package

[ThreeTreeDog]

I have some large meshes for landscape with a physical material mask applied, it works in editor, PIE but when trying to load the map in standalone or package it will crash the engine. Took me 2 days to narrow it down to what was causing it but it just wont work outside the editor. ill attach the dmp’s from it but basically they are no help it just says unknown function access blah blah nothing that pointed toward a material causing it for sure.

The meshes are using complex as simple around 1mil tri’s each, not running nanite on them, the support physical mask is checked… idk just wont run outside editor. mask has 2 channels in use 1.0.0 and 0.1.0

message.txt (4.8 KB)

[elia.misculini]

I had a similar issue with physical material masks: once the material was setup with it, when I started play the editor crashed. To fix it I reimported the .png mask, making sure it had ONLY red and green colors (or as many as you need, but starting from top to bottom of the list in the material editor). Infact, the first .png I imported had white and black only pixels, and the PMM importer converted it to a red-black one, which I suppose it had problems reading to