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Message: [QUOTE="madds, post: 3238306"] Hi Please can anyone help I have worked on a simple spreadsheet and saved it when I try to open it I get a message excel found unreadable content in file..... do you want to recover it ... when I click yes I get .....Excel can not open the file because the file format or file extension is not valid I am the only person working on this file, I am saving to a memory stick? I am working on office 2007 this is happening too often for me not to fix the problem as I have to keep redoing my work. hope you can help [/QUOTE]