Nah, obviously I had to install the mod after freeing Haer'Dalis and his friends from the prison.
I tried the clua but apparently but It doesn't work.
But that's fine anyway, I already made up my mind to restart the game one more time. I'll just loose another couple of hours of my life on baldur's gate, as usual.
This time I'll save my game seriously, for once.
Thanks for your help. At least I would have tried.