I receive the JAVA error message detailed when trying to download a torrent file on my laptop. I have two browsers installed, Firefox and Internet Explorer. I do not get the message if I download via I.E. so the problem is a Firefox/Java one. the message reads : java.lang.ClassNotFoundException: org.gudy.azureus2.ui.swt.Main at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at com.exe4j.runtime.LauncherEngine.launch(Unknown Source) at com.exe4j.runtime.WinLauncher.main(Unknown Source) Any help greatly appreciated. Java version up to date and correct version. (Why does it work with I.E. and not Firefox ??)