Exception: Converting file 1_Lead_MAIN_RS2.xml failed.

Index was outside the bounds of the array.
   at Rocksmith2014.DLCProject.PackageBuilder.sngsWithTones@388.Invoke(Arrangement arr)
   at Microsoft.FSharp.Primitives.Basics.List.choose[T,TResult](FSharpFunc`2 f, FSharpList`1 xs) in D:\a\_work\1\s\src\FSharp.Core\local.fs:line 192
   at Rocksmith2014.DLCProject.PackageBuilder.buildPackages@376-3.Invoke(DisposableList`1 coverArtFiles)
   at Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvoke[T,TResult](AsyncActivation`1 ctxt, TResult result1, FSharpFunc`2 part2) in D:\a\_work\1\s\src\FSharp.Core\async.fs:line 510
   at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction) in D:\a\_work\1\s\src\FSharp.Core\async.fs:line 112

Inner exception:
AggregateException: One or more errors occurred. (Index was outside the bounds of the array.) (Index was outside the bounds of the array.) (Index was outside the bounds of the array.)
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at System.Threading.Tasks.Parallel.For(Int32 fromInclusive, Int32 toExclusive, Action`1 body)
   at Microsoft.FSharp.Collections.ArrayModule.Parallel.Map[T,TResult](FSharpFunc`2 mapping, T[] array) in D:\a\_work\1\s\src\FSharp.Core\array.fs:line 2270
   at Rocksmith2014.Conversion.ConvertInstrumental.xmlToSng(InstrumentalArrangement arr)
   at Rocksmith2014.DLCProject.PackageBuilder.sngsWithTones@388.Invoke(Arrangement arr)