File problem

I have constructed a graphical family tree using X3. The file is some 90 pages and 15,860kb in size.

The last time I used it, I saved, closed, and closed CDraw.

When I next tried to open it, I got a single blank page.

The file in explorer still says 15,860kb, X3 graphic. The thumbnail shows a pencil instead of the normal page representation.

I have restarted the computer a number of times but the problem remains.

Does anyone have any ideas?

Thanks

Derrick