I have to temporarily take the downloads section offline (both servers) due to a bug in the installation program. Sorry for the inconvenience.
You can use the Amicron Theater, however, and view any of your courses online while I'm working on the problem. To use the Theater, just go to the downloads page and enter in your download code (or click on the link we sent you via email) and then select the Theater links at the top of the page. Both should be working.
(Update 10/8 4:20am) I've been working on this problem all night. Still have a couple of fixes to make. I'll have the downloads back up tomorrow afternoon.