Getting "Cannot Play Movie" for what ...

When I load a video by url from an email or in Safari, I get the message "Cannot Play Movie". However, I've written a simple app which just instantiates the MPMoviePlayerController and calls play() and it works flawlessly for the same video loaded from the same url.

I get the same issue regardless of where the video is hosted, i.e. if I load the same video from a different url on a different server.

QuickTime reports:

H.264, 480 x 270, Millions
AAC, Stereo (L R), 44.100 kHz
480 x 270 pixels

The video url is http://sistertech.s3.amazonaws.com/35007382172981/1655_042009/streams/35007382172981-1655_042009-ecar-124950129340988000-16-9.mp4

Also, this only became a problem after the 3.0 update.

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