Charts problem on excel 2013
*Created originally on Bitbucket by [zivziv](https://bitbucket.org/%7Bc46f6eb4-0fc7-487b-9ff8-69d243f48770%7D/)* I created a chart on version 2.3.0. When I open it on LibreOffice there's no problem. Attached python code, excel file and openXML tool errors *Attachments:* [charts.html](/uploads/7dcfaa64cbf66d0831f4da98597f54d0/charts.html)[Screenshot_from_2015-11-15_15_03_13](/uploads/95e3c117884e575d153b218b4ba75e57/Screenshot_from_2015-11-15_15_03_13.png)[test.py](/uploads/a7dc11a40e146754629a33e55f681e79/test.py)[charts.xlsx](/uploads/50bbfdc263a60225e9859b9623aaa636/charts.xlsx)
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