UDK Crash when touching Physics Asset

[Braindrain85]

Hey guys... I've encountered a problem. I have made a fence door as skeletal mesh and created a proper physics asset for it so that my character can open it by touching. I've set the variable bPushesRigidBodies=true in the Pawns default properties. But every time the character is touching the door, my level crashes.
The Log says "Critical: appError called: Cast of NULL to Pawn failed"



Help would be greatly appreciated!

[Braindrain85]

Ok, I am going to rephrase my question. If I simply drag and drop a physics asset into the standard udk level (the one with the cube) and press play, the character can't interact with the asset at all... why is that?