I am using Mozilla Firefox version 3.6.18. I don't want to update because last time I updated (recently) the newer version was such an unfriendly dog that after a few days I went back to the version I am still using. It works well! BUT, after I have successfully logged into my Macquarie Prime account, I then click the link to the trading platform and get a Java error message. Okay, perhaps Macquarie could have done a better job of making their java code cross-platform compatible, but I installed the latest version of Java and then tried again. With the newer version of Java, the error message changed, but I still got the following: "Java Plug-in 1.6.0_26 Using JRE version 1.6.0_26-b03 Java HotSpot(TM) Client VM User home directory = C:\Documents and Settings\adrian ---------------------------------------------------- c: clear console window f: finalize objects on finalization queue g: garbage collect h: display this help message l: dump classloader list m: print memory usage o: trigger logging q: hide console r: reload policy configuration s: dump system and deployment properties t: dump thread list v: dump thread stack x: clear classloader cache 0-5: set trace level to <n> ---------------------------------------------------- load: class com.fintrack.FtCFDTraderApplet.class not found. java.lang.ClassNotFoundException: com.fintrack.FtCFDTraderApplet.class at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source) at sun.plugin2.applet.Plugin2ClassLoader.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) Exception: java.lang.ClassNotFoundException: com.fintrack.FtCFDTraderApplet.class"