Something to do with going to the Evil Thalmor's mines and sabeutaging the operations. I read the note, but it seems to describe events that I'm assuming aren't meant to have happened at that stage in the storyline.
However, as I finished the fight against the Whistling King, and retrieving the titanium drillbit, I got a note and teleport cube from a 'Blue RFT' or whatever those mouse-like creatures are called. So, I have managed to play through the mod on XB1 with only minor issues as far as mod issues go.
