FrontPage is LIVE?

After successfully creating a Menu in Menumaker 1.1, I tried to insert it into my FrontPage so that i could add this to my site. I keep getting a frustrating error that tells me that it cannot alter the contents of this page because it is currently LIVE. Well,..I know it's not dead,...but what is this telling me? Live???
It proceeds to tell me that I need to save it, and alter the save version,...or load the original (which is what I'm working on). This makes no sense!

Why can't I get this thing to work?

thanks for any heads up on this.