2013 should not be a problem, I don't think. There's a KB article that lists possible causes as 1) Not having Excel installed (obviously this is not your problem), or 2) Having insufficient memory to export all the marks
How many marks are being drawn on the sheet you are trying to export? You can watch your memory usage when exporting to see if that is a problem on your machine.
I'd contact firstname.lastname@example.org either way, so they are aware of your issue.