This error usually occurs when duplicate data is written to cells *and* Office Service Pack 3 is installed.

See the following for a full explanation, workarounds and utility program to find the duplicate data:
WARNING: Spreadsheet::WriteExcel and Office Service Pack 3.

--
John.

In reply to Re: erron in spreadsheet::Write Excel by jmcnamara
in thread erron in spreadsheet::Write Excel by Anonymous Monk

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