I am having this exact same problem after following all of the directions to the letter. Did I screw up somewhere? I appreciate all the help guys.
PS C:\Users\Andrew White\Desktop\RELEASE_v2.1\seedminer> py -3 seedminer_launcher3.py gpu
GPU selected
Old3DS msed - this can happen on a New3DS...
Only thing drive me crazy is all these new horror games nowadays is its so dark, all time. I can't even play them. I understand they trying to create spooky but be creative a little, not just darkness with pop out scare scenes.