Mobile switching between levels crash

/Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu:PersistentLevel->OwningWorld
D/UE4 (27746): [2014.12.02-22.52.50:733][ 0]LogReferenceChain: (target) W
orld /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu
D/UE4 (27746): [2014.12.02-22.52.50:938][ 0]LogLoad: World /Temp/Autosav
es/Game/UEDPCMenu.UEDPCMenu [target] (standalone)
D/UE4 (27746): Level /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu:PersistentL
evel (root) (ObjectProperty /Script/Engine.Level:OwningWorld)
D/UE4 (27746):
D/UE4 (27746): Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Rele
ases+4.5\Engine\Source\Runtime\Engine\Private\UnrealEngine.cpp] [Line: 9173]
D/UE4 (27746): World /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu not cleaned up
by garbage collection!
D/UE4 (27746): World /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu [target] (s
tandalone)
D/UE4 (27746): Level /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu:PersistentL
evel (root) (ObjectProperty /Script/Engine.Level:OwningWorld)
D/UE4 (27746):
D/UE4 (27746): [2014.12.02-22.52.50:940][ 0]LogLoad:Fatal: World /Temp/Auto
saves/Game/UEDPCMenu.UEDPCMenu not cleaned up by garbage collection!
D/UE4 (27746): World /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu [target] (s
tandalone)
D/UE4 (27746): Level /Temp/Autosaves/Game/UEDPCMenu.UEDPCMenu:PersistentL
evel (root) (ObjectProperty /Script/Engine.Level:OwningWorld)