ArgumentOutOfRangeException during Preprocess on project

Version used: 2.0.109

Analyzing a build on a very simple netcoreapp3.0 console app project, can provide more details or a reproducer repo if needed. I right-clicked a “Project” element, clicked “Preprocess” and got the below error:

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Unexpected exception. Sorry about that.

Please Ctrl+C to copy this text and file an issue at https://github.com/KirillOsenkov/MSBuildStructuredLog/issues/new

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.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)

   at System.SZArrayHelper.get_Item[T](Int32 index)

   at StructuredLogViewer.PreprocessedFileManager.CorrectForMultilineImportElement(SourceText text, Int32 lineNumber)

   at StructuredLogViewer.PreprocessedFileManager.GetPreprocessedText(String sourceFilePath)

   at StructuredLogViewer.PreprocessedFileManager.GetPreprocessedText(String sourceFilePath)

   at StructuredLogViewer.PreprocessedFileManager.ShowPreprocessed(String sourceFilePath)

   at StructuredLogViewer.Controls.BuildControl.<.ctor>b__34_13(Object s, RoutedEventArgs a)

   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

   at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)

   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

[nguerrera]

Filed https://github.com/microsoft/msbuild/issues/4714

[KirillOsenkov]

This is all fixed now.