I can't add scrolls to my book

[Vimel]

I played the mod (which is awesome by the way  ) for an hour or so and i added 2 spells to my book, then i won a tournament in a swadian town and bought 3 more scrolls, but when i tried to add these to the book the only option on the screen was "Go back".
Is this a known bug? Is it a bug at all?

 

[guspav]

You have to have enough magic power to learn some spells.
With 6 or more you'll be able to learn them all

 

[Vimel]

You have to have enough magic power to learn some spells.
With 6 or more you'll be able to learn them all

Thanks! Guess I have to get more intelligence