I cut and paste another part of the file to an existing excel file,
When open the file again, the page is blank and a dialog box states:
"Unable to open file". I saved my work every step of the way. I made a
backup copy and have tried it several times. Each time the dialog box
states : Unable to read file. I opened up a new page on the same sheet and
was able to make the change but I could not correct the original page.