Can´t buy scroll (bug?)

[henrikfm]

On the spells screen, in the left there is the number of scrolls you have and the number you can carry, in example:

25 (11)

That means you have 25 and you can carry only 11. You usually have more scrolls than you can carry because you always get the treasure and quest reward scrolls, regarding your free scroll slots. The problem is that you can't buy any scroll in any shop until you have a free slot.

You would have to sell 15 scrolls: 25-15 = 10 (11)

You can sell scrolls in castles, openning the spell book while in castle screen.