After using Devel::SimpleTrace I discovered that the messages I was seeing were misleading. The issue was actually happening during the automatic close of the workbook object as the script was exiting.

After I added 

     $workbook->close();

[download]
prior to the steps I take to email the spreadsheet that is created the errors went away.

Much thanks to Corion and jmcnamara for the assist.

Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg

In reply to SOLVED: Odd crash involving Spreadsheet::WriteExcel by blue_cowdawg
in thread Odd crash involving Spreadsheet::WriteExcel by blue_cowdawg

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