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olivier o commented on MNG-4604: -------------------------------- Thanks for the quick answer. It's make sense M2_HOME related to maven2 and M3_HOME to maven 3... > Error when changing M2_HOME on linux (at least :) ) > --------------------------------------------------- > > Key: MNG-4604 > URL: http://jira.codehaus.org/browse/MNG-4604 > Project: Maven 2 & 3 > Issue Type: Bug > Components: Class Loading, Command Line > Affects Versions: 3.0-alpha-7 > Environment: Linux RH 5 > Reporter: olivier o > Assignee: Benjamin Bentmann > Priority: Minor > > When I tried to change the value of M2_HOME directory, I get the following > error > -bash-3.2$ mvn -v > 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$1.run(URLClassLoader.java:200) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) > at java.lang.ClassLoader.loadClass(ClassLoader.java:251) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) > My m2_home includes the same settings.xml > If I unset the m2_home, it's find : > -bash-3.2$ mvn -v > Apache Maven 3.0-alpha-7 (r921173; 2010-03-09 23:31:07+0100) > Java version: 1.6.0_07 > Java home: /opt/sun/jdk1.6.0_07/jre > Default locale: en_US, platform encoding: UTF-8 > OS name: "linux" version: "2.6.18-164.el5" arch: "amd64" Family: "unix" -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira