thanks,  got it now.  Primitive but usable.  I would be prepared to pay to be able to continue using MapQuest but there seems to be no way you can contact them to be able to put a fix in. 
So bye-bye MapQuest.
regards, David

I saw the messages about OpenStreetMap and hit on the address and got a map of southern England - which is where I am.  Great! But there is no "File" button to go to.  So I cannot proceed to "Options" and "General" and the instructions for downloading.  Can someone please explain to me what I have to do?
Please note that I am a complete computer illiterate dummy - worse, I am an old man and computers hate old men.....
would someone please help me?
Thanks, Regards, David

I contacted the suggested sites at MapQuest. I tried to read what they were trying to say but it's computer geek stuff, not in English.
I don't understand any of it.  There is a free App (App???), so I joined their extortion club (the Mafia and the European Union could learn a lot from these guys) and subscribed to the "Free App".
I got onto a page recognising me.  It provides customer id and secret squirrel stuff but I cannot understand what it gives me and it does not tell me how I should use it. So for the time being I can't use Plan-G.
Regards
David

I've got the same thing. Tiles covering the maps stating access has been discontinued.
Looks like we're going to have to pay somebody to continue usage.
Question is: Who? How much? How to pay?