diff -r 0ad6d8372f9d -r 0974378d235a src/Tools/jEdit/src/jedit/plugin.scala
--- a/src/Tools/jEdit/src/jedit/plugin.scala	Tue Dec 08 16:44:30 2009 +0100
+++ b/src/Tools/jEdit/src/jedit/plugin.scala	Tue Dec 08 17:56:53 2009 +0100
@@ -142,8 +142,7 @@
   {
     Isabelle.plugin = this
     Isabelle.system = new Isabelle_System
-    if (!Isabelle.system.register_fonts())
-      System.err.println("Failed to register Isabelle fonts")
+    Isabelle.system.register_fonts()
   }
 
   override def stop()