I previously completed The Memory Den. After the chat at the end of mission, Long Time Coming, I dismissed Nick.
Now he is nowhere to be found.
He is not at his office.
He is not at any settlement.
I even checked the Memory Den and Piper's office.
I even loaded my old save game from the end of Long Time Coming and dismissed him and then followed him to see where he would go. He walks along the road past a Red Rocket, then past Big John's Salvage, then past Shaw High School, then turns north past Milton General. A small ways north along that road he stops indefinitely. (At a spot near the center of a small triangle of land formed by Fairlane Hill Estates and Relay Tower OSC-527 and NH&M Freight Depot. I reloaded my current game and walked along that route to find him... He is nowhere there either.
Where should I look to find Nick?
Why doesn't the game include a map pointer to find companions like it does for Preston at the end of most Minute men quests?