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Changing Material from Code crashes when exiting (ESC/Stop)

I wanted to change the material on the blocks in the first person template. In the constructor I have the following:

static ConstructorHelpers::FObjectFinder Material(TEXT("MaterialInstanceConstant'/Game/FirstPerson/Materials/M_Tech_Hex_Tile_Pulse_Inst.M_Tech_Hex_Tile_Pulse_Inst'"));

if (Material.Object != NULL) { TheMaterial = (UMaterial*)Material.Object; } In the event method, i set the material the following way:

TheMaterial_Dyn = UMaterialInstanceDynamic::Create(TheMaterial, this);

Itr->SetMaterial(0, TheMaterial_Dyn);

When I press the 'Q' key (the one I bount to the event) the material is changed accordingly, no problem yet. Exiting the game in the editor (ESC/Stop) gives me an access violation error.

Sometimes it breaks in the StaticMeshRenderer.cpp (line 2018):

OutMeshBatch.MaterialRenderProxy = Material->GetRenderProxy(bUseSelectedMaterial,bUseHoveredMaterial);

Sometimes it breaks in the ShaderBaseClasses.cpp (line 129), which is just "UE_LOG("

If I destroy the Actors before exiting I don't get the error.

What am I doing wrong? Do I need to edit the material at some point, do I need to import the material differently?

Product Version: UE 4.8
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asked Jul 08 '15 at 09:10 AM in Rendering

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Ethlaron
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Seems like I found the answer:

When creating the Material, I used UMaterialInstanceDynamic::Create(TheMaterial, this)

Using this was wrong, should have used Itr->GetOuter() instead, since I was setting the UObject Outer wrong

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answered Jul 08 '15 at 11:58 AM

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Ethlaron
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