升级到1.21后报错，是否是原来的MOD兼容问题？

fujian1229

从原来的版本升级上来的，但是玩一会儿会报错，看了下报告貌似是有些MOD不兼容，不知道怎么处理比较好，全部MOD删掉？
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Object reference not set to an instance of an object [System.NullReferenceException]

Details:
No details
System.NullReferenceException: Object reference not set to an instance of an object
  at BusAI.UnloadPassengers (UInt16 vehicleID, .Vehicle& data, UInt16 currentStop, UInt16 nextStop) [0x00000] in <filename unknown>:0
  at BusAI.ArriveAtTarget (UInt16 vehicleID, .Vehicle& data) [0x00000] in <filename unknown>:0
  at BusAI.ArriveAtDestination (UInt16 vehicleID, .Vehicle& vehicleData) [0x00000] in <filename unknown>:0
  at SuperBigTransport.BigBusAI.ArriveAtDestination (UInt16 vehicleID, .Vehicle& vehicleData) [0x00000] in <filename unknown>:0
  at CarAI.SimulationStep (UInt16 vehicleID, .Vehicle& vehicleData, .Frame& frameData, UInt16 leaderID, .Vehicle& leaderData, Int32 lodPhysics) [0x00000] in <filename unknown>:0
  at BusAI.SimulationStep (UInt16 vehicleID, .Vehicle& vehicleData, .Frame& frameData, UInt16 leaderID, .Vehicle& leaderData, Int32 lodPhysics) [0x00000] in <filename unknown>:0
  at VehicleAI.SimulationStep (UInt16 vehicleID, .Vehicle& vehicleData, UInt16 leaderID, .Vehicle& leaderData, Int32 lodPhysics) [0x00000] in <filename unknown>:0
  at CarAI.SimulationStep (UInt16 vehicleID, .Vehicle& data, Vector3 physicsLodRefPos) [0x00000] in <filename unknown>:0
  at VehicleManager.SimulationStepImpl (Int32 subStep) [0x00000] in <filename unknown>:0
  at SimulationManagerBase`2[Manager,Properties].SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0
  at VehicleManager.ISimulationManager.SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0
  at SimulationManager.SimulationStep () [0x00000] in <filename unknown>:0
  at SimulationManager.SimulationThread () [0x00000] in <filename unknown>:0