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Getting following exception when trying to save workbook.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

If I remove code that generates the chart the error disappears

OK found out that there are 2 charts with same name.

To reproduce this error try copying chart to another sheet

Hi,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Please share your sample code and template file to show the issue. We will check it soon.

Thank You & Best Regards,

Found out that I was using older version of Aspose.Cells.dll