Stellaris/HOI IV model compatability?

[K-vald]

It is probably because of the shader used, you have to use PdxMeshAdvanced in HOI4 and Stellaris usually use PdxMeshShip except for portraits that use PdxMeshPortrait and some effects that may use an alphablend shader.

You can change shader manually in the mesh in the .gfx file where you have the mesh by writing

meshsettings = {
            shader = "PdxMeshAdvanced"
}

So it will look like

pdxmesh = {
        name = "arthropoid_01_bomber_mesh"
        file = "gfx/models/ships/arthropoid_01/arthropoid_01_bomber.mesh"
        scale = 1.0
            meshsettings = {
            shader = "PdxMeshAdvanced"
            }
}