1.11C下出现错误。哪位大大知道这个要怎么解决吗？

leeds8310

错误代码是这样的：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 TransferManager.StartTransfer (TransferReason material, TransferOffer offerOut, TransferOffer offerIn) [0x00000] in <filename unknown>:0
  at TransferManager.MatchOffers (TransferReason material) [0x00000] in <filename unknown>:0
  at TransferManager.SimulationStepImpl (Int32 subStep) [0x00000] in <filename unknown>:0
  at SimulationManagerBase`2[Manager,Properties].SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0
  at TransferManager.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