What version of maven, and how did you install it? I use maven constantly, and I don't know how to get that error except with a defective installation or a very strange setting of MAVEN_OPTS.
On Sun, Apr 10, 2011 at 10:52 AM, Jeff Eastman <[email protected]> wrote: > Trying to run mvn on my mac (after about 6 months on a Linux box at work) > but getting this. I seem to recall getting a new Java version update a while > back but Java works fine. Any ideas? > > > jeff-eastmans-macbook-pro:mahout jeff$ mvn > Exception in thread "main" java.lang.NoClassDefFoundError: > org/codehaus/plexus/classworlds/launcher/Launcher > Caused by: java.lang.ClassNotFoundException: > org.codehaus.plexus.classworlds.launcher.Launcher > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:307) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > at java.lang.ClassLoader.loadClass(ClassLoader.java:248) > >
