SirLittleJohn

Can i get any help pls? Assertion failed: Obj->IsValid() [File:.\UnProp.cpp] [Line: 824] History: UObjectProperty::CleanupDestroyed <- (ObjectProperty Engine.Actor.StaticMesh) <- UStruct::CleanupDestroyed <- (Class Engine.StaticMeshActor) <- CleanupRefs <- ULevel::CleanupDestroyed <- UGameEngine::DetachLevelWithAllSubLevel <- Cleanup <- UGameEngine::LoadMap <- LocalMapURL <- UGameEngine::Browse <- ClientTravel <- UGameEngine::Tick <- UpdateWorld <- MainLoop