When removing this mod (along with Overwatch) after despawning a train I got a lot of errors such as this:

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

I don't know if it was caused by this mod or overwatch being removed. Cheers. Weird thing is that these errors are happening even in other save games that had nothing to do with that train or the mods.

Restarting the game after having unsubscribed from both Overwatch and Remove stuck vehicles solved the issues.

Cheers.