Odd Crashing Behavior

birdboy · April 1, 2020, 12:44am

I’ve recently run into an unusual bug that causes UE4 to crash every time. I added a character that I modeled in Blender, with a few animations, and added the textures into Unreal. I then added the physics capsules to the various bones/limbs, and all was well. As I added capsules and constraints in the physics asset editor, I simulated the physics to make sure everything was working well. I completed all of the capsules, and then went into the mesh editor to start working on cloth simulation. Before I could do that, however, UE4 crashed. Now, if I decide to apply a physics simulation on the character, UE4 crashes. I can simulate physics on the default mannequin, however, with no issues.

Here are a couple of pictures of my physics asset: Screenshot - 2387922679a022c0730ac74d387d4bc8 - Gyazo | Screenshot - 5fc730a314bbf53f50260fe3938c2dc6 - Gyazo

Here is the “summary information” of the crash log:

Unhandled exception

UE4Editor_PhysicsAssetEditor

UE4Editor_Slate

UE4Editor_ApplicationCore

user32

UE4Editor_ApplicationCore

UE4Editor

kernel32

ntdll

I can track down the full log and post it, if that is necessary. I would really appreciate some help here, as I cannot really continue development with this happening.

Thanks, in advance.

MostHost_LA · April 1, 2020, 11:28pm

Probably start by installing the debug symbols on this version of the engine.
with the info from that you can probably submit a bug report.

To fix the issue you can probably delete the PHAT asset and re-create it.
it must have been something you triggered on or off that caused this, as I have never had the issue. Or an engine bug with whatever version you are on…

birdboy · April 4, 2020, 4:46am

In case it’s an issue with the engine version, I am going to try porting my project to the latest version (4.24.3) and see if that fixes it. If not, I will likely have to try redoing the physics asset, as you recommended.