Question mark on QuickTime logo. Please help!
QuickTime logo with question mark keeps showing up on a video that worked earlier today (I haven't changed any settings.) The URL I'm trying to access is http://historicalthinkingmatters.org/scopestrial/.
Everything on the site works, save for the Quicktime videos. I've tried enabling and disabling Quicktime, Flash, Silverlight, and Flip4Mac in various configurations. I have tried Chrome, Firefox, and Safari (all latest versions). Is the content on the site broken, or is there something I can do to make it work on my end?
I realize this question has been asked before, but I can't find a workable solution in any previous threads.
MacBook (13-inch Mid 2010), OS X Mountain Lion (10.8.4)