RBPenetrationDestroy destroying vehicle on spawn

[Jephir]

I am creating a vehicle that extends from UDKVehicle. When it spawns in the game world however it's instantly destroyed by RBPenetrationDestroy(). I can override the function, but then the game crashes when I try to enter the vehicle.

This is my vehicle class:

class FSVehicle_Jeep extends UDKVehicle
	placeable;

defaultproperties
{
	Begin Object Name=SVehicleMesh
		SkeletalMesh=SkeletalMesh'VH_Jeep.Mesh.SK_VH_Jeep'
		AnimTreeTemplate=AnimTree'VH_Jeep.Anims.AT_VH_Jeep'
		PhysicsAsset=PhysicsAsset'VH_Jeep.Mesh.SK_VH_Jeep_Physics'
	End Object

	Begin Object Class=SVehicleWheel Name=FLWheel
		BoneName="F_L_Tire"
		SkelControlName="F_L_Tire_Cont"
		WheelRadius=27
		bPoweredWheel=true
	End Object
	Wheels(0)=FLWheel

	Begin Object Class=SVehicleWheel Name=FRWheel
		BoneName="F_R_Tire"
		SkelControlName="F_R_Tire_Cont"
		WheelRadius=27
		bPoweredWheel=true
	End Object
	Wheels(1)=FRWheel

	Begin Object Class=SVehicleWheel Name=BLWheel
		BoneName="B_L_Tire"
		SkelControlName="B_L_Tire_Cont"
		WheelRadius=27
		bPoweredWheel=true
	End Object
	Wheels(2)=BLWheel

	Begin Object Class=SVehicleWheel Name=BRWheel
		BoneName="B_R_Tire"
		SkelControlName="B_R_Tire_Cont"
		WheelRadius=27
		bPoweredWheel=true
	End Object
	Wheels(3)=BRWheel
}

Anyone know how to solve this problem?

[Jephir]

Putting these two lines of code in defaultproperties:

DestroyOnPenetrationThreshold=50.0
DestroyOnPenetrationDuration=1.0

seems to fix the vehicle being destroyed when spawned. The game still crashes when I try to enter a vehicle though. This is the log:

Log: >>>>>>>>>>>>>> Initial startup: 7.71s <<<<<<<<<<<<<<<
Log: === Critical error: ===
Fatal error!

Address = 0x17bea82  (filename not found) [in C:\UDK\UDK-2012-03\Binaries\Win32\UDK.exe]
Address = 0x178650e  (filename not found) [in C:\UDK\UDK-2012-03\Binaries\Win32\UDK.exe]
Address = 0xa7debc   (filename not found) [in C:\UDK\UDK-2012-03\Binaries\Win32\UDK.exe]
Address = 0xa8e7f7   (filename not found) [in C:\UDK\UDK-2012-03\Binaries\Win32\UDK.exe]
Address = 0x3d7611   (filename not found) [in C:\UDK\UDK-2012-03\Binaries\Win32\UDK.exe]

Exit: Executing UObject::StaticShutdownAfterError
Exit: Executing UWindowsClient::ShutdownAfterError
Exit: Executing UWindowsClient::ShutdownAfterError
Exit: UXAudio2Device::ShutdownAfterError
Log: Shutting down FaceFX...
Log: FaceFX shutdown.
Log: appRequestExit(1)
The program '[4208] UDK' has exited with code 0 (0x0).

Is there any way to get a stack trace of where the code crashed? Or is this happening somewhere in the engine where we don't have access?