Cannot complete the install because one or more required items could not be found.
  Software being installed: PHP Development Tools (PDT) Runtime Feature 2.2.0.v200911190058-7L7J-F8NcJKhTTUhJK5Y (org.eclipse.php.feature.group 2.2.0.v200911190058-7L7J-F8NcJKhTTUhJK5Y)
  Missing requirement: Dynamic Languages Toolkit Core 2.0.0.v20091110-1755 (org.eclipse.dltk.core 2.0.0.v20091110-1755) requires 'bundle org.eclipse.emf.ecore 2.4.0' but it could not be found
  Cannot satisfy dependency:
    From: Dynamic Languages Toolkit - Core Frameworks 2.0.0.v20090917-1518-7L--EAAoOQBUSiiBVyrP (org.eclipse.dltk.core.feature.group 2.0.0.v20090917-1518-7L--EAAoOQBUSiiBVyrP)
    To: org.eclipse.dltk.formatter [2.0.0.v20090730-1127]
  Cannot satisfy dependency:
    From: Dynamic Languages Toolkit Formatter 2.0.0.v20090730-1127 (org.eclipse.dltk.formatter 2.0.0.v20090730-1127)
    To: bundle org.eclipse.dltk.core 2.0.0
  Cannot satisfy dependency:
    From: PHP Development Tools (PDT) Runtime Feature 2.2.0.v200911190058-7L7J-F8NcJKhTTUhJK5Y (org.eclipse.php.feature.group 2.2.0.v200911190058-7L7J-F8NcJKhTTUhJK5Y)
    To: org.eclipse.dltk.core.feature.group [2.0.0,3.0.0)