The names of some NPCs were not being read correctly. This has been fixed. This should allow for the treasure goblins to appear on the radar/ESP.
Please note these NPCs have names different from the way they appear in the game. For example, the "Resident" NPC will appear like SUB_ . . . _RESIDENT. Use the name that appears on the ESP/radar or via the -allmobs console command.
This fix requires Speeder version 179+.