Getting error in every root of indian railways

[Avasthi999]

Getting this error in every activity which i am playing...

Error: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeExceptio n(ExceptionArgument argument, ExceptionResource resource)
at System.ThrowHelper.ThrowArgumentOutOfRangeExceptio n()
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Orts.Viewer3D.TrackSoundSource.UpdateTType() in e:\Documents\Coding\Jenkins\jobs\Open Rails Stable\workspace\Source\RunActivity\Viewer3D\Sound .cs:line 275
at Orts.Viewer3D.TrackSoundSource.Update() in e:\Documents\Coding\Jenkins\jobs\Open Rails Stable\workspace\Source\RunActivity\Viewer3D\Sound .cs:line 302
at Orts.Viewer3D.Processes.SoundProcess.Sound() in e:\Documents\Coding\Jenkins\jobs\Open Rails Stable\workspace\Source\RunActivity\Viewer3D\Proce sses\SoundProcess.cs:line 132
at Orts.Viewer3D.Processes.SoundProcess.DoSound() in e:\Documents\Coding\Jenkins\jobs\Open Rails Stable\workspace\Source\RunActivity\Viewer3D\Proce sses\SoundProcess.cs:line 116
at Orts.Viewer3D.Processes.SoundProcess.SoundThread() in e:\Documents\Coding\Jenkins\jobs\Open Rails Stable\workspace\Source\RunActivity\Viewer3D\Proce sses\SoundProcess.cs:line 100
at System.Threading.ThreadHelper.ThreadStart_Context( Object state)
at System.Threading.ExecutionContext.Run(ExecutionCon text executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()