--- a/src/Pure/Admin/build_release.scala Mon Oct 24 12:16:12 2016 +0200 +++ b/src/Pure/Admin/build_release.scala Mon Oct 24 14:05:22 2016 +0200 @@ -49,6 +49,8 @@ { /* release info */ + Isabelle_System.mkdirs(base_dir) + val release_info = { val date = Date.now()