The newest version of SwitchWithIt is available on Source Forge: https://sourceforge.net/projects/switchwithit/ This update prevents the use of characters in the Train ID that Windows does not permit in file names. The Train ID is used by SwitchWithIt to generate a temporary file when a switchlist is built. This same file is used when the train is Terminated or Cancelled. The other change is to the Freight Car Shipments Requirement Window. I have disabled the use of the mouse scroll wheel on this window which was causing an error. I will enable the wheel again when or if I find a solution to the problem. David