Excel 2007 opens with only one worksheet

In Excel 2007, when User A creates a new workbook, there is only 1 worksheet for the book. When user B creates a new workbook, there is the standard 3 worksheets for the book. How do I get this back to default for User A? The workbook being opened has more than 50 worksheets that have been in the file for the last year. When User B opens the file, all 50 or more sheets are accessible. This happens with both files saved as 2003 files because the workbook has VBA macros in it and if I open new xlsx files that are in Excel 2007 format. Cancel the question. This was apparently a cockpit error. the workbook was sized very large when a space delimited (.prn) version of one worksheet was made. I would swear I checked this before I asked the question, but I just reduced the workbook size again and the problem went away. It is interesting that the problem migrated to all excel files for user A.

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