Hey, so I know that this thread isn't really active anymore, but I'm really desperate to solve this problem.
I'm trying to forward Pokemon White 2 and Pokemon Black. Both files are DSi enhanced, AP patched, confirmed to be compatible, and have names which I assume are short enough (white 2.nds and black .nds.) I'm just using my SD card because I do not own a flashcard (I'm hoping that's okay.) I have GodMode9 installed and everything. I've tried forwarding the NDS files with them being stored on my PC, and on my USB drive. I don't own a SD to USB adapter so I have to use FTPD or plug in the SD card into a different computer and copy and paste the files on to it from my USB drive (I keep all my files on my own PC, but it doesn't have an SD card slot, so I have to use someone else's, which has one.) Because of this, I can't exactly use the nds. files in Forwarder 3DS with them being stored on the SD card directly. Instead, I have to copy them to the SD, to the point where it would have been the same as if I were to install it there directly.
On to the actual problem, I'm getting that common issue where I get the 2 black and white screens when I load my icons on the home menu. I've tried so many different things but none of them have worked. I've kept the forward NDS files on my SD card, just the regular nds files, both, and tried deleting both and just installing the CIAs. I've both checked and unchecked Automatically Set ROM paths, Keep NDS files, etc. I've tried putting the CIA files and the NDS files in the same folder and different folder. I tried personally setting the path in Forwarder 3DS. None of this works; I get the same error every time.
I'm really hoping that it's not because I can't put files directly onto my SD card from my PC, or because I don't have a flashcard and I'm just being stupid. Any ideas?