Unable to read file

L

Lightly

I've been working with an excel (2000) spreadsheet all morning. It is a very
large file. This time when I saved it, which I've been doing regularly, I
got a message that it was saved, but I would have to close the file and
reopen it to continue working on it. I closed the file, but when I try to
reopen it I get a message of "Unable to read file."

Does anyone have any suggestions?

Thanks in advance
 
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