Very, very useful modpack. HOWEVER, I'm afraid that either the Discovery Lens, or any other mod in this pack, is causing conflict with the Antiquarian unit, from Great Britain. The explorer doesn'r show where to excavate or any other icons. ONLY the Scouts show the green area of the place to excavate, so, there's a problem in here.
How do I know? I disabled the mod pack, that includes this mod, which I suspected earlier was the problem, and yeah, the explorers, or the Antiquarians actually showed the iconns as intended by the devs.