I just purchased and downloaded the movie entitled 'Jiro dreams of Sushi' into my iTunes. But I got a message pompting 'This movie requires Quick time. This version of iTunes does not support.' I use a 10.7 version of iTunes.
Try relaunching iTunes in 32-bit mode first, as per the instructions in the following document:
iTunes for Mac: Older media files may require iTunes to reopen in 32-bit mode
Retrieving data ...