---++ BUILDING The NetBeans IDE version 6.0M9 is currently used for the development of plugin. Older version of harness (NB5.5) can fail to run tests. Read the documentation of this support to get details about the configuration. Basically it tries to find Java platform called 'JDK 1.5' and NetBeans platform named 'NetBeans IDE M6.0M9' Released plugin versions are built with JDK 1.5 and against NetBeans6.0M9.