Okay, here is my resolution for the black and white screen on launch:
1. Delete sd:/_nds directory (probably not entirely necessary).
2. Drop forwarder pack into sd:/ to restore sd:/_nds (warning: you will have to reinstall
3. Install CIAs from Forwarder3DS.
Word of Warning:
The Forwarder3DS...
Hi,
I am having nearly an identical issue. Pokemon HeartGold launches fine via TWL but fails to launch using the forwarder CIA.
I am stuck at a black and white screen.
Any hints appreciated, thank you!