Greetings all, I'm a very inexperienced CC3 person so please keep things real basic for me if you would. When I try to start a map, I select a template but all I get is a flicker of light and the main mapping area is white, no template appears. In the past I could get templates, but now I'm unable to. If I open up a file of one of my attempts at starting a map it also flickers and gives me the white screen, no map, no symbols, etc. The files I save are there, I just don't understand why the map template isn't present.

How can I correct this?