I've been trying to get your addon working but I'm running into a small complication.
I am unable to submit a reply. Everytime I do, I get a 404 on "index.php?x=save_comment"
I do not get this problem when I submit a new message.
Any idea what it could be? Probably something stupid I'm not seeing!!!
Take a look if you like! I could provide the files in the backend if required.
Thanks for your help!