Combining F-Zero with Grand Prix 2 is such a great idea! Unfortunately the gui patcher seems to be bugged (it won't produce a patched rom, even though it says it's doing that).
I'll give as much detail as I can so it's hopefully easier to figure out what's going wrong. I made sure both roms were named correct, in the f-zero_final_patcher-master folder with FZFinal_Patcher.exe, and both had the correct CRCs.
What happened when hitting Patch is this:
1 F-Zero.sfc was deleted.
2 F-Zero_Grand_Prix_2.sfc was not deleted.
3 There was a message that said
"F-Zero Final patching was successful, created file:
C:\f-zero_final_patcher-master\\F-Zero_Final.sfc"
4 But there was no F-Zero_Final.sfc in the folder, or anywhere.
I copied F-Zero.sfc back into the folder and ran FZFinal_Patcher.exe again. The same thing happened.
I noticed there's two \\ right before F-Zero_Final.sfc in that message. I'm wondering if that has something to do with it not creating F-Zero_Final.sfc.
I then tried running apply_patch.bat instead--with the same roms--and that seems to have worked fine (I might have been wrong about that, see post edit at the end). But FZFinal_Patcher.exe is not putting out a patched rom for some reason. All it's doing is deleting one of the unpatched roms.
Edit: I'm getting a black screen when trying to select the BS vehicles and when trying to start the Ace league. Is there a specific emulator that's needed to work properly? I can only use Snes9xGX and Snes9xRX on the Wii right now because my pc is having problems. Both of those are having the black screen problems.