Crash while dying to Heresiarch

Fixed in 1.1.

After being killed by the Heresiarch on The Octagon (map06), the game crashed with following output:

Log: tanthalos had his bones rolled by the Heresiarch.
Log: Sys_Error: Reference not set to an instance of an object
Log: - RunFunction
Log: - (engine.Entity.DistTo2 5)
Log: - RunFunction
Log: - (linespec.SorcBall.A_SorcOffense2 131)
Log: - RunFunction
Log: - (linespec.SorcBall.A_SorcBallOrbit 471)
Log: - VObject::ExecuteFunction
Log: - (linespec.SorcBall.A_SorcBallOrbit)
Log: - VEntity::SetState
Log: - VEntity::AdvanceState
Log: - RunFunction
Log: - (engine.Entity.AdvanceState 0)
Log: - RunFunction
Log: - (linespec.EntityEx.Tick 285)
Log: - RunFunction
Log: - (linespec.Actor.Tick 82)
Log: - VObject::ExecuteFunction
Log: - (linespec.Actor.Tick)
Log: - VThinker::Tick
Log: - VLevel::TickWorld
Log: - SV_Ticker
Log: - ServerFrame
Log: - Host_Frame
Log: Doing C_Shutdown
Log: Doing CL_Shutdown
Log: tanthalos left the game

Dev: Sound None lump not found
Log: Doing SV_Shutdown
Log: Doing delete GNet
Log: Doing delete GInput
Log: Doing V_Shutdown
Log: Doing delete GAudio
Log: Doing T_Shutdown