if you talk about XLSX you first should add the appropriate type mime (you've adedd one that seems truncated)
AddType application/vnd.openxmlformats-officedocument.spreadsheetml.sheet xlsx
then will it be possible to have the page on line including the link to see what's going on... here is an exemple...
Thanks for your very speedy reply. This has solved my problem perfectly. I thought the original script looked odd but I used it as given.
Brilliant !! Thanks again