Why is Oculus Quest apk crashing when an imported Character Creator 3 mesh is added in Unreal Engine 4.24.3?


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By GG2020 - 5 Years Ago

We are running into an issue where when we add a skeletal mesh created using Character Creator 3 Pipeline Extension into Unreal where the apk build for Android ASTC crashes during launch on the Oculus Quest hardware.

At first we were receiving an error that the skeletal mesh had too many bones for our target platform, so I began using the Character Creator 3 Game Base Model feature which reduces models and prepares them for VR/AR. After importing this new model into a new VR project in the Motion Controller Map and packaging we had no errors returned. However, the apk crashes upon launch in the hardware. The VR template launches without the model, but once it is added the crash is introduced. Aside from the conversion done in CC3 to reduce the model, no additional work is being done to the baseline model in the software.

I suppose we are looking for more insight on building to the Quest from UE4 and implementing models generated from the Character Creator 3 Pipeline Extension. We are also using the CC shader plugin in our projects for importing the FBX skeletal mesh.

Thank you for your time and consideration. -Ernie

By unit23 - 5 Years Ago
GlimpseGroup (6/11/2020)
We are running into an issue where when we add a skeletal mesh created using Character Creator 3 Pipeline Extension into Unreal where the apk build for Android ASTC crashes during launch on the Oculus Quest hardware.

Hi, did you tried using the Unreal Engine mesh editor to setup LOD's?
Is there a specific Unreal error message? 
What Unreal version are you using?


By GG2020 - 5 Years Ago
I am not specifically using the LOD exporter at the moment, but converting the model to the Game Base Model before export and exporting the model for UE with a single merged material. One issue we are getting within Unreal is an error saying our model has 85 bones and can only have a max of 75, but I am unaware of how we can directly edit the skeleton to fit these confines in Character Creator alone. The apk builds, but crashes as soon as it is launched on the Quest. Is there a way within Character Creator 3 to get a compatible skeleton?

We are using this model in version Unreal 4.24.3