Dear all, I've just downloaded the Linux JDK 1.3RC1 from Sun's website. I've been using the "beta refresh" with JMF 2.1, and have tried to use RC1 in the same way. However, I get the exception below. It seems that the exception is thrown whenever I declare a class specified in JMF 2.1, such as Player. Anyone got any ideas? Is the bug (if it is a bug) JMF, or the new JDK? As I said above - it worked with the beta refresh. Thanks for any insights! Nige. Exception in thread "main" java.lang.SecurityException: no manifiest section for signature file entry codecLib/mpa/i.class at sun.security.util.SignatureFileVerifier.verifySection(SignatureFileVerifier.java:262) at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:174) at java.util.jar.JarVerifier.processEntry(JarVerifier.java:284) at java.util.jar.JarVerifier.update(JarVerifier.java:197) at java.util.jar.JarFile.initializeVerifier(JarFile.java:248) at java.util.jar.JarFile.getInputStream(JarFile.java:310) at sun.misc.URLClassPath$4.getInputStream(URLClassPath.java:528) at sun.misc.Resource.getBytes(Resource.java:60) at java.net.URLClassLoader.defineClass(URLClassLoader.java:245) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at java.lang.ClassLoader.loadClass(ClassLoader.java:290) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at java.net.URLClassLoader.defineClass(URLClassLoader.java:248) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at ClipSearchPanel.<init>(ClipSearchPanel.java:15) at ClipBrowserFrame.<init>(ClipBrowserFrame.java:12) at ClipBrowser.main(ClipBrowser.java:7) -- URL: http://www.cs.bris.ac.uk/~jewell ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]