Near the end of the ACN level 30 class quest "Sinking Doesmaga", near the end of the quest when you trade the "Odd Leather Satchel" key item to Thubyrgeim in the Arcanist's Guild, Thubyrgeim has the following piece of dialogue:

"And you are to thank for awakening the foreseer to her self-imposed fetters."

This should instead read:

"And you are to be thanked for awakening the foreseer to her self-imposed fetters."

Just a small typo, but there you go!