Crashes when applying glass material to mesh

Development Asset Creation
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1

Hello

For some reason my UE has begun crashing every time I apply a glass material from one of the content samples to specific fbx models in my level?

First it began with crashing when I clicked on the models in the scene when they had a glass material applied…(Some models with same glass material works fine?)

Then I had to remove the Uassets from the content folder, so i could remove them from the scene…

It was working fine… so I don’t know whats happen…

The same glass materials works fine on all my other imported meshes in the level… and everything other then glass materials works fine on the “broken” models…

Getting this message:

!Id:a740f84d3bc8c655b72f9f79da2a7143

We apologize for the inconvenience.
Please send this crash report to help improve our software.

Tried to renaming the fbx files and reimport them, but same crash when i apply a glass material to them… Also migrating the materials again did not work…

Using 4.3 in a new FPS BP template with the map file copyed and assets migrated from a 4.2.1 project…

Can anyone tell my what’s wrong?

2

No one know how to fix this?

I get this error in the log file:

[2014.07.19-12.40.13:890][653]LogWindows:Error: Windows GetLastError: The operation completed successfully. (0)
[2014.07.19-12.40.13:890][653]LogCrashTracker: 


[2014.07.19-12.40.13:890][653]LogWindows: === Critical error: ===
Unhandled Exception: 0x00000001

[2014.07.19-12.40.13:890][653]LogWindows: Rendering thread exception:
Couldn't find Shader TShadowDepthVSVertexShadowDepth_OutputDepthtrue for Material Resource Glass3!
		With VF=FLocalVertexFactory, Platform=PCD3D_SM5 
		ShouldCache: Mat=1, VF=1, Shader=0 
		Material Usage = MSM_DefaultLit, BLEND_Translucent, TSNormal, Distorted, bUsedWithStaticLighting

But same material works fine on other models in the level??

3

Got same issue in 4.4, still not fixed?:frowning:

4

Hey Xenosis and Pierdek -

The glass material that you are using have you selected two sided in the material editor to apply on your meshes? Also are you using the LPV system?

Let me know -

Eric Ketchum

5

Hi Eric
LPV is turned on. Two sided is turned off. Of course when I have turned off shadow casting on all compononents that are uses this material the engine doesn’t crashing anymore.

if you want I can deliver tomorrow morning whole callstack.

6

Hey Pierdek -

There is a known issue with Translucent materials and LPVs that we are working on. I will keep you informed as we continue to work on this issue.

Thank You -

Eric Ketchum