'Watch a Video' Assistance Stopped Working

I used to use the “Watch A Video” assistance while doing the curriculum challenges but after some cookies were deleted i can no longer access the videos. The window comes up but the video is absent, just a blank gray background. Any ideas how to get it back?

I believe that some of the challenges had the wrong links includeded in the “Watch a Video” code. If this is the cause of the problem that you are experiencing, the a fix has been written and will be deployed once the current round of updates makes it through the QA process.