This plugin must be upgraded to version 1.2. Previous versions are not supported.
The Drools plugin must be uninstalled as long as it does not support Sonar 3.3.
All the Servlet 2.4 application servers, including Tomcat 5.5, are not supported anymore when using the WAR deployment mode.
This property has been replaced long time ago by the property
Due to the following JRuby issue: https://jira.codehaus.org/browse/JRUBY-6494, the following line has to be added in conf/wrapper.conf:
Note that this property has to be set when launching Tomcat (as the wrapper.conf file is not used when deploying in application server).