Having trouble seeing YouTube video in Drupal 7 using Media and Media YouTube I'm having trouble seeing YouTube video in Drupal 7 using Media and Media YouTube.

I've followed this tutorial but I never seem to get a video to show up on my page.
http://www.cleverlogic.net/tutorials/drupal-7-video-setup-using-media-and-media-youtube-module

Another thing I've noticed is that when I add a video to some content type, I never see the video's thumbnail.

No errors seem to get displayed. 

I'm using Drupal 7, 
Media 7.x-1.0-rc2
Media YouTube 7.x-1.0-alpha5 

Thanks for your help.
For future reference, the video_embed_field module now works well for youtube and vimeo videos.