I just updated from 1.20 also. I tried to follow the instructions for spawning in the treasure hunter. I found a trader who sold me a map for 4 gears. I used the map it it said, "no location found on this map". Eventually I tried the spawning in again - and then I got an X on my map. I went to the X, and there's nothing there. I'm not sure exactly what I'm trying to find, but I haven't gotten any kind of error message, but also I haven't found a treasure hunter or any new kind of structure. I don't know if there's still a problem with what I did or what. At least so far (knock on wood) it hasn't broken my old world. Ok - it finally worked. Either I forgot to do the last command, or the second time was the charm. It was /wgen_deir_10 I'm not sure the underlines are really there or not. It didn't work when I typed it without them. I finally just clicked on the command and it worked. This did NOT work right. I got a treasure hunter in a fancy little building, but he was just asked for a tin-bronze pick and gave me the map to the Resonance Chamber.
