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Why is my editor crashing when using the wheeled blueprint?

I'm using the ewheeled blueprint to create a drivable simple cube car but UE 4 crashes when I press play. I'm using the "flying template" and there is no problem flying the saucer.


Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: UpdatedComponent->GetBodyInstance()->GetPxRigidDynamic() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.2\Engine\Source\Runtime\Engine\Private\Vehicles\WheeledVehicleMovementComponent.cpp] [Line: 155]

KERNELBASE + 23544 bytes UE4Editor_Core + 2998748 bytes UE4Editor_Core + 1620298 bytes UE4Editor_Core + 1561376 bytes UE4Editor_Engine + 15270281 bytes UE4Editor_Engine + 15270019 bytes UE4Editor_Engine + 1654141 bytes UE4Editor_Engine + 1774453 bytes UE4Editor_Engine + 1772406 bytes UE4Editor_Engine + 1763753 bytes UE4Editor_Engine + 5147500 bytes UE4Editor_Engine + 3681127 bytes UE4Editor_Engine + 3667256 bytes UE4Editor_Engine + 3583035 bytes UE4Editor_Engine + 3675040 bytes UE4Editor_UnrealEd + 3380279 bytes UE4Editor_UnrealEd + 3495204 bytes UE4Editor_UnrealEd + 3562059 bytes UE4Editor_UnrealEd + 1462885 bytes UE4Editor_UnrealEd + 5375494 bytes UE4Editor!FEngineLoop::Tick() + 3555 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launchengineloop.cpp:2091] UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launch.cpp:132] UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:125] UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:207] UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Product Version: Not Selected
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asked Jul 15 '14 at 08:14 PM in Bug Reports

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avatar image Hallonsaft Jul 16 '14 at 08:16 AM

If I leave the Skeletal Mesh field free in the default properties of the wheeled blueprint it doesn't crash, as soon as I specify the Skeletal Mesh and try to play it crashes. So it has something to do with the Skeletal Mesh.

avatar image Hallonsaft Jul 16 '14 at 09:16 AM

Aha! The problem shows up when I'm using the single convex hull collision geometry option when creating a new body in physics asset. I don't have any idea why that happens though.

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By creating a new body with only the selected bones, as seen by the picture below, the problem was solved, no more crashes. Previously I selected everything when making a new body which cause the crash.

alt text

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answered Jul 16 '14 at 09:40 AM

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