Groovy plugin breaks scala plugin

If you install the scala plugin from http://www.scala-lang.org/scala-eclipse-plugin then install the groovy eclipse plugin on eclipse 3.5 the scala plugin breaks. It looks like the scala plugin starts using the java compiler and the scala resource in package explorer becomes a java resource.

try creating some scala code like after installing both plugins:-

object test2 {
def main(args : Array[String]) : Unit =

}