Index: /trunk/quest-core-events/src/main/java/de/ugoe/cs/quest/eventcore/guimodel/GUIModel.java
===================================================================
--- /trunk/quest-core-events/src/main/java/de/ugoe/cs/quest/eventcore/guimodel/GUIModel.java	(revision 746)
+++ /trunk/quest-core-events/src/main/java/de/ugoe/cs/quest/eventcore/guimodel/GUIModel.java	(revision 747)
@@ -188,5 +188,5 @@
             }
             catch (UnsupportedEncodingException e) {
-                stream = new PrintStream(out);
+                throw new IllegalArgumentException("encodind " + enc + " not supported");
             }
         }