I just saved and closed an Excel document that contained about 20 worksheets.
When I reopened the file, all of the worksheets, except the top one are
gone!! This is about 6 hours of work gone in a heart beat. I'm using
Microsoft Office Mac 2008 on a MacBook Pro, Excel version 12.2.0. Is there
anyway to recover these worksheets from the autosave file, and how to I find
it? More importantly, how do I keep this from happening again? The file
extenstion was a csv file, so could that be the problem?

I would appreciate any help.
Thank