title: Impossible to add a Roo configuration to preferences
body: <p>I've installed STS 3.8.0 including Spring IDE Roo Support. 
  I've installed also ROO 1.3.2 that works fine, even if I've had to add manually the "pref" key in REGEDIT. 
  I make an attempt to create a Spring ROO project with the wizard but it require a ROO configuration. By the way the application looped on this and I had to shutdown it via Task Manager. 
  I red some hints to use Preferences to add a Roo configuration, simply pointing the %ROO%_home
  But I continue to have an error like the image attached. <a href="http://i.stack.imgur.com/yFNej.gif" rel="nofollow">enter image description here</a><br>
  Someone ca help me? 
  Thanks
  Mirco</p>