I am using timthumb to present images inside a Wordpress theme. It works fine when showing images from the same server but as soon as I try to load external images (in this case youtube thumbnails) it returns a 404 as if the script itself couldn't be found. The script is there though, if I load local images it behaves as expected. I have t set to allow external images, and specifically those from img.youtube.com
The strange thing is the exact same theme works as expected on my localhost and the external images show up fine, so I'm guessing it's something wrong on the hosting. Any suggestions as to what this may be?