Yep, that was basically my problem. I completely forgot about the case sensitivity. "/show_window mainhud.inventory" brought up the right window, but no content.
I'm wondering if my problem adding it to the MainHUD.StartButton is the same basic issue.
For now I've got it as a separate window which is more than enough. I'll probably play around with the StartButton window a bit more, though, to see if I can figure out why it's broken there.
Thanks for all the help and suggestions
