I have all the DLC and the trainer works except for adding Dragon Souls.
I've tried what the other poster said worked for them, but I'm not getting any Dragon Souls.
The procedure I've been following:
I have one dragon soul.
I open the magic section and go to Shouts, (shows one DS in lower right corner).
I press 6 and hear "activated".
I close out of the magic menu and go back in game.
I open the magic menu and go to Shouts, (still shows one DS in lower right corner).
Everything else is working, just no adding souls.
Yeah its not changing/adding DS for me either.