--- a/src/Pure/Thy/present.scala Mon Oct 19 16:37:45 2015 +0200
+++ b/src/Pure/Thy/present.scala Mon Oct 19 16:55:52 2015 +0200
@@ -103,7 +103,7 @@
if (info.options.bool("browser_info")) {
Isabelle_System.mkdirs(session_prefix)
- File.copy(graph_file, (session_prefix + Path.basic("session_graph.pdf")).file)
+ File.write(session_prefix + Path.basic("session_graph.pdf"), File.read(graph_file))
File.copy(Path.explode("~~/etc/isabelle.css"), session_prefix)
File.copy(Path.explode("~~/lib/fonts/IsabelleText.ttf"), session_prefix)
File.copy(Path.explode("~~/lib/fonts/IsabelleTextBold.ttf"), session_prefix)