XF 1.4 Trouble importing smilies

I am trying to import smilies using an XML file created using this script - https://xenforo.com/community/threads/vbulletin-smilies-to-xml-conversion-script.50233/

I moved all the smilies into the correct file path on my server, but when I try to import the smilies using the XML file I get the following:
Error: The provided file is not valid smilies XML.

Has the format changed for the smilies XML? This is an example of what I have in my XML file
<?xml version="1.0" encoding="UTF-8"?>
***other smilie data***
You will need to seek support in the add-on thread.
Even if I'm using the Xenforo smilie importer?
It reads
"Use this option to import an XML file containing smilie definitions. Before proceding to the next step, you should ensure that you have manually uploaded all necessary smilie images to your server in the appropriate locations."

What are the required smilie definitions?