I am not sure when it happened but for some reason Marketpress is not talking with Coursepress anymore.
When you purchase the course it is not connecting and sending a registration confirmation to the client.
I have gone through Coursepress and ensured that Marketpress is set to sell the course.
I have uninstalled and reinstalled Marketpress numerous times to make the connection happen.
The last thing that I have done was uninstalled Marketpress, removed the product from a store and reinstalled the plugin. I went back to Coursepress to set a course as a paid course. In the store, it shows the course listed. When I complete the purchase it wants to ship a product. It needs to register the person to the course!