Openpyxl corrupts Excel 2010 *.xlsx file

File was created in Excel 2010, when i try use openpyxl (2.4.8) for generate something on it base i get "unreadable content" error message in Excel. Even without any modification:

wb = load_workbook('invoice.xlsx')
response = HttpResponse(content_type='application/vnd.ms-excel')
response.write(save_virtual_workbook(wb))

I get error in Excel: "Excel found unreadable content in 'invoice.xlsx'. Do you want to recover teh contents of this workbook? If you trust the source of this workbook, click Yes. (Yes) (No)"

Thanks for the report and the file. The problem is related to the print area that openpyxl makes a mess off.

Refactor to handle range strings that contain just rows and or columns. Resolves #855

→ <<cset 56a073508151>>