I am using Web Designer Premium. I saved a site in the Save As and renamed it because I want to try out some changes to see what it looked like. As soon as I deleted a heading for a page, and tried to save the change, I got this error message.

Anyone any idea of what is wrong. Is there another way to make a copy of a whole site so you can play with it to see what some changes would look like and only use it when you are happy with it?

Suggestions would be appreciated. I do have some mobile pages with this site.