Trying Open Rails for First Time, Error Message

[PerryPlatypus]

So I am trying Open Rails for the first time, and every time I try to start any route with any train, I get this error message:

"System.ArgumentException: An item with the same key has already been added."

Followed by a list referencing various things such as MSTS.TrackShapes.Add(Trackshape trackShape)

and a dozen or so similar lines. I can get a screen capture if necessary.

Any help is much appreciated.

[PerryPlatypus]

Oh never mind, turns out it was something with my Tsection.dat which I managed to resolve.