Exception ticking Dorna: System.NullReferenceException: Object reference not set to an instance of an object
at BetterPathfinding.RegionLinkDijkstra.GetRegionDistance (Verse.Region region, Verse.RegionLink& minLink) [0x00000] in <filename unknown>:0
at BetterPathfinding.RegionPathCostHeuristic.GetPathCostToRegion (Int32 cellIndex) [0x00000] in <filename unknown>:0
at BetterPathfinding.PathFinder.FindPathInner (IntVec3 start, TargetInfo dest, TraverseParms traverseParms, PathEndMode peMode, HeuristicMode mode) [0x00000] in <filename unknown>:0
at BetterPathfinding.PathFinder._FindPath (IntVec3 start, TargetInfo dest, TraverseParms traverseParms, PathEndMode peMode) [0x00000] in <filename unknown>:0
at Verse.AI.PathFinder.FindPath (IntVec3 start, TargetInfo dest, Verse.Pawn pawn, PathEndMode peMode) [0x00000] in <filename unknown>:0
at Verse.AI.Pawn_PathFollower.GenerateNewPath () [0x00000] in <filename unknown>:0
at Verse.AI.Pawn_PathFollower.TrySetNewPath () [0x00000] in <filename unknown>:0
at Verse.AI.Pawn_PathFollower.TryEnterNextPathCell () [0x00000] in <filename unknown>:0
at Verse.AI.Pawn_PathFollower.PatherTick () [0x00000] in <filename unknown>:0
at Verse.Pawn.Tick () [0x00000] in <filename unknown>:0
at Verse.TickList.Tick () [0x00000] in <filename unknown>:0
pawn just froze , and error in one second was repeated more then 200 times..