After discovering this mod I played it non-stop for a week, but then my S key broke and I couldn't play until the replacement arrived.
Now I wanted to launch the game and it gives me the pop up to enter my product key. I do so, klick accept, and it gives me the same pop up again. When I ignore it and start the mod anyway it throws me out saying I need to activate the product key, but starting the game vanilla lets me play normal.
Can anyone help me? This seems to be a problem with the mod, not the game, but I also posted this in the M&B forum on Steam. I just want to play again :<

EDIT: I'm playing the mod on the original Mount & Blade, not Warband