Why won't itunes download trailers to my computer?

I am running the latest versions of both Mac OS and Itunes. I am having trouble downloading theatrical trailers to my computer. I go to the area in the itunes store, but when I select download in HD, nothing happens. I have had no problems purchasing music, or doing any other tasks in Itunes.

Any help is appreciated.

MAC OSX Yosemite

Macbook Pro 2.5Ghz mid 2012