anchor.diff:                                        PackageName = node.ParentNode.Name })
                                   filePaths
                           Some <| List.ofArray assets
  -                    with exn -> debug <| "Invalid folder path '" + directoryPath.InnerText + "'."; None
  +                    with exn -> debug <| "Invalid folder path '" + directory.InnerText + "'."; None
   
       /// Attempt to load all the assets from a package Xml node.
       let tryLoadAssetsFromPackageNode optAssociation (node : XmlNode) =
  
positive.code:         let attributes = node.Attributes
          match attributes.GetNamedItem DirectoryAttributeName with
          | null -> None
          | directoryPath ->
              let searchOption =
                  match attributes.GetNamedItem RecursiveAttributeName with
                  | null -> SearchOption.TopDirectoryOnly
  
negative.code:             let intermediateFilePath = Path.Combine (intermediateDirectory, intermediateFileSubpath)
              let outputFilePath = Path.Combine (outputDirectory, intermediateFileSubpath)
              ignore <| Directory.CreateDirectory ^^ Path.GetDirectoryName outputFilePath
              try File.Copy (intermediateFilePath, outputFilePath, true)
              with _ -> () // just ignore copy issues due to assets possibly having a lock on them
  
      /// Attempt to build all the assets found in the given asset graph.
      let tryBuildAssetGraph inputDirectory outputDirectory refinementDirectory fullBuild assetGraphFilePath =
  