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http://jira.codehaus.org/browse/MNG-4604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Bentmann closed MNG-4604.
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Resolution: Not A Bug
Assignee: Benjamin Bentmann
You can't mix the mvn run script and the M2_HOME var from different Maven major
versions. If you point M2_HOME at a 2.x installation, the 3.x run script won't
work and vice versa.
> 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"
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