anchor.diff:                   reraise ()
   
   
  -let updateMasterBinaries hash artifactDir =
  +let updateMasterBinaries () =
  +    let antho = Configuration.LoadAnthology ()
  +    let baseline = Configuration.LoadBaseline ()
       let binDir = Env.GetFolder Env.BinOutput
  -    let versionDir = artifactDir |> GetSubDirectory (hash.Version.toString)
  -    let binSourceDir = versionDir |> GetSubDirectory Env.MSBUILD_BIN_OUTPUT
  -    IoHelpers.CopyFolder binSourceDir binDir false
  +    let artifactDir = antho.Artifacts |> DirectoryInfo
  +
  +    let hash = baseline.Bookmarks |> Seq.tryFind (fun x -> x.Repository = antho.MasterRepository.Name)
  +    match hash with
  +    | Some bookmark -> let versionDir = artifactDir |> GetSubDirectory (bookmark.Version.toString)
  +                       let binSourceDir = versionDir |> GetSubDirectory Env.MSBUILD_BIN_OUTPUT
  +                       DisplayHighlight (sprintf "bin %s" bookmark.Version.toString)
  +                       IoHelpers.CopyFolder binSourceDir binDir false
  +    | None -> DisplayHighlight "[WARNING] No reference binaries found"
  +
   
   
   let Checkout (version : BookmarkVersion) =
  
positive.code:         | None -> Vcs.VcsCheckout wsDir repo None
  
      // update binaries with observable baseline
      let hash = baseline.Bookmarks |> Seq.find (fun x -> x.Repository = antho.MasterRepository.Name)
      let artifactDir = antho.Artifacts |> DirectoryInfo
      DisplayHighlight (sprintf "bin %s" hash.Version.toString)
      updateMasterBinaries hash artifactDir
  
  let Pull (src : bool) (bin : bool) =
      let antho = Configuration.LoadAnthology ()
  
negative.code:                 Vcs.VcsPull wsDir repo
  
      if bin then
          updateMasterBinaries ()
  
  
  let Init (path : string) (uri : RepositoryUrl) = 
      let wsDir = DirectoryInfo(path)
      wsDir.Create()
      if IsWorkspaceFolder wsDir then 
          printf "[WARNING] Workspace already exists - skipping"
      else
          let vcsType = Vcs.VcsDetermineType uri
          let repo = { Name = RepositoryId.from Env.MASTER_REPO; Url = uri; Vcs=vcsType}
          VcsCloneRepo wsDir true repo
  
      updateMasterBinaries ()
  
  
  let Exec cmd =
  