Lately I've received several emails from students who can no longer view the video lessons in their course, even though they have enabled pop ups in their browser for the training site. The culprit has been the Google toolbar. Click here for information on resolving this issue.
Record your screen so I can see what is happening when you try to view a lesson. You may do so at this link Screencast-O-Matic - Free online screen recorder for instant screen capture video sharing. You can mail the video link directly to me by clicking here.