need plupupload library installed. See... http://www.plupload.com/download https://www.google.com/search?client=firefox-b-1-ab&ei=ojknWtC8IqG7ggf3squYDg&q=plupload+drupal&oq=plupload&gs_l=psy-ab.1.0.0i71k1l4.0.0.0.6411.0.0.0.0.0.0.0.0..0.0....0...1c..64.psy-ab..0.0.0....0.dwORo71vgy8