Hi Eugene,
there is a typo in the plug-in's name: org.jboss.tools.common.rreferences
and in package name too.

Eugene Stherbin wrote:

Hi,

Resources reference and El functionality moved to the separate bundles.

Download plugins from svn by urls below.

https://svn.jboss.org/repos/jbosstools/trunk/common/plugins/org.jboss.tools.common.rreferences

https://svn.jboss.org/repos/jbosstools/trunk/common/plugins/org.jboss.tools.common.el