I have activated the plugin and the button appeared in all sections but the one with XThreads.
I have changed the template but the thanks/like button and the data didn't appear... Any ideas?
Hmm, that is odd - I dont have that plugin installed myself, but if I remember right, in the ACP you indicate which forums you DON'T want it in - not the ones you do.
So if your target forum is 17 (say) and you have the number 17 in the applicable forums box in the ACP settings for the plugin, then it will show everywhere BUT in forum 17. See what I mean?