I’m trying to implement a grab system for my race game but I can’t call attach to actor on a vehicle blueprint because it causes my game to crash.
This is my grab blueprint
https://blueprintue.com/blueprint/dy7-iyir/
And this is my function that disables all physics on to actor to be attached
https://blueprintue.com/blueprint/rh24pfst/
When the game reaches the attach to actor node the engine crashes and I get the following log
[2017.05.21-20.04.02:376][585]LogWindows:Error: === Critical error: ===
[2017.05.21-20.04.02:376][585]LogWindows:Error:
[2017.05.21-20.04.02:376][585]LogWindows:Error: Fatal error!
[2017.05.21-20.04.02:376][585]LogWindows:Error:
[2017.05.21-20.04.02:376][585]LogWindows:Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff
[2017.05.21-20.04.02:376][585]LogWindows:Error:
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-PhysXVehicles.dll!0x00000000C7EEAD5F
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-PhysXVehicles.dll!0x00000000C7EDEAF1
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-PhysXVehicles.dll!0x00000000C7ED52BB
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-PhysXVehicles.dll!0x00000000C7E8F6B5
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-PhysXVehicles.dll!0x00000000C7E8380E
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D4FCD290
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D5061CB4
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D4FE1752
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D43DA465
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Core.dll!0x00000000DC61D84D
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Core.dll!0x00000000DC61DC6D
[2017.05.21-20.04.02:376][585]LogWindows:Error: UE4Editor-Core.dll!0x00000000DC63CCEB
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D53889D1
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D53996A2
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D4CC7B64
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-Engine.dll!0x00000000D4CCFF2D
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-UnrealEd.dll!0x00000000D2DF6D8E
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor-UnrealEd.dll!0x00000000D3602156
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor.exe!0x000000009CA4DEE3
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor.exe!0x000000009CA3EB40
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor.exe!0x000000009CA3EBBA
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor.exe!0x000000009CA50A29
[2017.05.21-20.04.02:377][585]LogWindows:Error: UE4Editor.exe!0x000000009CA522B6
[2017.05.21-20.04.02:377][585]LogWindows:Error: KERNEL32.DLL!0x0000000020722774
[2017.05.21-20.04.02:377][585]LogWindows:Error: ntdll.dll!0x0000000022770D61
[2017.05.21-20.04.02:377][585]LogWindows:Error: ntdll.dll!0x0000000022770D61
[2017.05.21-20.04.02:377][585]LogWindows:Error:
[2017.05.21-20.04.02:408][585]LogExit: Executing StaticShutdownAfterError
[2017.05.21-20.04.02:468][585]LogPhysics:Error: PHYSX: ( 0) eINVALID_OPERATION : PxScene::lockWrite() detected after a PxScene::lockRead(), lock upgrading is not supported, behaviour will be undefined.
[2017.05.21-20.04.02:469][585]LogPhysics:Error: PHYSX: (D:\Build\++UE4+Release-4.15+PhysX_Compile\Sync\Engine\Source\ThirdParty\PhysX\PhysX_3.4\Source\PhysX\src\NpScene.cpp 3020) eINVALID_OPERATION : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2017.05.21-20.04.02:575][585]LogPhysics:Error: PHYSX: (D:\Build\++UE4+Release-4.15+PhysX_Compile\Sync\Engine\Source\ThirdParty\PhysX\PhysX_3.4\Source\PhysX\src\NpScene.cpp 218) eINVALID_OPERATION : PxScene::lockWrite() detected after a PxScene::lockRead(), lock upgrading is not supported, behaviour will be undefined.
[2017.05.21-20.04.02:578][585]LogPhysics:Error: PHYSX: (D:\Build\++UE4+Release-4.15+PhysX_Compile\Sync\Engine\Source\ThirdParty\PhysX\PhysX_3.4\Source\PhysX\src\NpScene.cpp 3020) eINVALID_OPERATION : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2017.05.21-20.04.02:683][585]LogWindows: FPlatformMisc::RequestExit(1)
[2017.05.21-20.04.02:684][585]Log file closed, 05/21/17 17:04:02