Book file missing in Digital Editions folder.

My PC has a folder named Digital Editions. Presently, it contains a PNG (Picture) and annotation of a purchased book.

Normally, clicking on the book cover and selecting "Open with Digital Editions", the Digital Editions program immediately open with the book ready to read.

In this instance, clicking on the book cover and selecting "Open with DE", opens the DE program MINUS any sign of the book.

What remedy do I have, in order to recover the book for reading?

Please advise.