Using FLASH version of Excel export. This works for me in Safari on a PC (old version 5.1.7 of safari).
However, it does not work in Safari (version 9.1.3) on a MAC (OS X 10.11.6). The file that gets generated & saved is quite small & when you try to open it, you get the following error:
"We found a problem with some content in 'xxx'. Do you want us to try to recover as much as we can? If you trust the source of this workbook, click Yes."
After clicking 'Yes' and opening, the Repairs dialog from Excel has this info:
"Excel completed file level validation and repair. Some parts of this workbook may have been repaired or discarded.
Repaired Part: /xl/worksheets/sheet1.xml part with XML error. Catastrophic failure Line 1, column 0."
(If I try to open the file with a simple editor, it looks like all binary values -- instead of a valid excel file which is mostly readable.)
I get this error message with both my table & with the following example from your website:
https://datatables.net/extensions/buttons/examples/flash/simple.html
On a (somewhat) unrelated note, does this mean that Safari will soon be able to support the 'excelHtml5' button?
https://bugs.webkit.org/show_bug.cgi?id=156056
Thank you.