Hi, As an adept of freemind I was very happy to see that a freemind macro exist for xwiki. Unfotunately I have a ClassNotFoundException when tha applet is invoked by the macro, it seems that the FreeMind java library can not be found by the downloaded applet. Here is the Stack Trace of the exception : /Java Plug-in 1.6.0_15 Utilisation de la version JRE 1.6.0_15-b03 Java HotSpot(TM) Client VM charger : classe freemind.main.FreeMindApplet.class introuvable. java.lang.ClassNotFoundException: freemind.main.FreeMindApplet.class at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.io.IOException: open HTTP connection failed:http://code.xwiki.org/xwiki/bin/view/Macros/freemind/main/FreeMindApplet/cla... at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source) at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) ... 7 more Exception : java.lang.ClassNotFoundException: freemind.main.FreeMindApplet.class/ The exception occurs on my instance of xwiki and on the xwiki web site at this example address : http://code.xwiki.org/xwiki/bin/view/Macros/MindMapMacro My instance of xwiki is XWiki Enterprise 1.9.3.22597 on Windows XP SP3 and as you see in the stack trace I have the last 1.6.0_15 java plugin. Can you give me an advice to resolve this problem. Thanks in advance, Julien