You're not wrong that the extension is a possible additional failure point, which is why I requested that you check without it. The extension spaces...
It should complain; you should get a pop up message on the EFIS that says "LOAD NEW MAP CYCLE?" with yes or no buttons on the bottom of the screen. ...
Yes you do need the AFS map data as well, it powers the AFS map, airspsaces, obstacle database, the synthetic vision, EFIS airport directory, and so...