I have been able to generate the .xlsx file and download it with no problem using Firefox, but when I try to download the file using IE8 I get the following error:
"Internet Explorer cannot download [file name] from [server]
Internet Explorer was not able to open this Internet site. The requested site is either unavailable or cannot be found. PLease try again later."
The file name given has a .xl extension, yet when I download the file in Firefox it has the proper .xlsx extension.
Any ideas on what's causing this?