Trying to play netplay with smb1 on nes. Both pcs have the exact same rom and core. But it still says the other one is running a different core or just failed to initialize. Could anyone give some clues on what to do?
Are you using the stable v1.9.0 of RetroArch? if so, try using a nightly. I understand the stables had an issue that could cause this sometimes.
One pc is using the stable and one the nightly. I can try that.