Premier of "ODELAY"

warning: file_get_contents(http://www.vimeo.com/api/rest?api_key=&method=vimeo.videos.getThumbnailUrl&size=160&video_id=4501774&api_sig=4eea2b76e1d0e7308bfb19b0e2be38ac) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request in /home/rxymfash/public_html/drupal/sites/all/modules/emfield/contrib/emvideo/providers/vimeo.inc on line 223.