You need minimum 3 Charisma to talk to him.
and/or 5 Intel to talk with him.
If it isn't working, then maybe your stat points are off. Or we should remove these demands. That dialog you took a screen of, is the old dialog file. I fixed the engrish, but I guess that isn't in game yet.
EDIT: Sorry about editing the above post, I was trying to quote it, but hit the wrong button.