Hello I was using Excel 2007 on XP for a long time. I have created a a document that I created yesterday and have to present, but today when I tried to open it, it kept on saying, "Name.xls: file format is not valid." I've read some posts and forums and tried to change the file extension, do the zip method, used the open and repair method, but all with no luck. I usually back up my files, but I recently just made a draft thinking that I'll complete it the next day. I've attached the files, in case someone out there has a repair tool that can fix it. Thank you and any help would be greatly appreciated.
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