I'm using the latest version of RW. Two years ago I made a website with the then current RW. I feel certain that I am correctly following the directions: made a folder, did the site setup and page inspector, theme and saved each page with a name.html in the folder, previewed each page and copied and saved the folder in three different drives (two external). When I return to do more work the photographs are missing. The pages show the numbers I assigned each photo but there is a box with a "?" where the photos were the night before. Before closing the files I had double checked and they were there but are gone today.
Any suggestions as to what is going wrong?