In the quest "missing in action" Avulstein Gray-Mane asks me to find evidence of his brother been taken captive. In the house, I can read the book which says he has been captured, and it says "Press E to take", but pressing "E" doesn't do anything. I can't get the proof. Anybody else have this issue or a walkaround?

Rylant

have you re-mapped any of your keys in the menu? If so try setting the keys back to default and try taking the book again.

I have to agree with Rylant:

There is a note that "Enter or 0" can act as "E" but that doesn't work either.

YES- I have to remap most of the keys, this is because I only have 1 hand and many keys need to be adapted to my mouse... seems sickly to have to default all my remap just to complete a quest! (and this is assume that even solves the problem)