General My classpath is not updated for a specific module. What is wrong?

You need to have set the skip flag to false, that the studio:eclipse goal is executed on your module.

org.apache.directory.studio maven-studio-plugin false Installation Running mvn studio:{goal} maven doesn't finds the plugin 'studio'. What's wrong?

The studio plugin has not the default package name for maven plugins. You need to prefix the studio plugin. See Introduction to Plugin Prefix Resolution or do the prefixing within your projects root pom: org.apache.directory.studio maven-studio-plugin studio