Yeah, that's what I thought and also where I get stuck, Jason. The XML file doesn't exist. The custom directory just has the one file in it (content_form_content_content1.js). I go through all the right steps, connect the style sheet, select the styles to include, but it doesn't create an XML file.
I'm using HTML Editor via CSS Form Builder. I've tried uninstalling that Extension, reinstalling it, deleting the cache file, restarting my computer, I've had a beer and a sleep and I tried it all again. Same result ... doesn't create an XML file.
What do I need to do to get this working?