iTunes U plays previous video when trying to open reading material I'm having a strange problem with iTunes U (in iTunes). When I click on a non-video item in the lecture feed, it simply plays the last video.
The item I'm trying to view is clearly not a video, as indicated by the book-symbol:



But in this example, when I click "Reading: The Rest of Swift", it simply plays "9. Scroll View and Multithreading".

I'm using a mac running OSX Yosemite, so there shouldn't be any problems with that.
Why is this happening then?
The solution seems to be to first download the item, and then it will open properly.