ruby on rails - OpenDocument Spreadsheet corrupt in Microsoft Excel -

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i using gem write opendocument spreadsheet (rspreadsheet) once data written let user download it. spreadsheet works fine in openoffice calc , numbers mac. however, when try open spreadsheet in microsoft excel tells me spreadsheet corrupt. happens when write data it. can open via ruby , save , work fine. once write data it, becomes corrupt.

i have tried gem (rubiod) , able open spreadsheet in excel after excel had 'recover' spreadsheet. in doing removed formulas , formatting. worse in openoffice , numbers although did retain formulas.

i need user able download spreadsheet in ever program choose. have no idea why excel says sheet corrupt , have tried wrap head around hours.

the spreadsheet saved ods extension , downloaded using mime type of application/x-vnd.oasis.opendocument.spreadsheet , character set of utf-8

examples:

original = rspreadsheet.open 'blank.ods' sheet = original.worksheets 1 sheet.a1 = 'foobar' # without this, excel can open spreadsheet fine original.save 'new.ods'  respond_to |format|   format.all     send_data file.read('new.ods'), type: 'application/x-vnd.oasis.opendocument.spreadsheet; charset=utf-8; header=present' disposition: 'attachment; filename=new.ods'   end end


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