In which version are you opening the 2007 workbook?

Do you have the Compatibility Pack installed?

http://support.microsoft.com/kb/923505


Gord Dibben MS Excel MVP

On Sat, 19 Sep 2009 07:31:01 -0700, pb787878
wrote:

Has anyone else seen this? I've seen a few other people asking about this on
the web, but no answers.

"pb787878" wrote:

Every time I open an Excel document that was created in Excel 2007 format, it
also performs a file conversion and opens a duplicate copy labeled something
like XI0000011 [Read-Only] [Compatibility Mode].

Can anyone help me turn this off?

Thanks