I take a look at my browser's console window, and see a whole bunch of errors -- one for each time I clicked the Save & Continue button.
No matter what I enter into the "First name" field, the browser reports "Cannot set property 'firstName' of null".
The application gets stuck in this same place each time I leave the site and login fresh. Oh, and it also requires I re-enter half the information it already has each time I restart.
This application now appears to be in a state that it cannot be completed. And since the system only allows one open application at a time, this kind of error likely encourages users to create a new Healthcare.gov account -- if they don't totally give up in frustration.