Can't seem to get Netplay to work

[mikespie]

Hi everyone. I built my brother and I a Retropie each running emulation station in a Nespi case but for the life of me can't figure out how to properly get Netplay working. I am trying locally to illeviate any issues and have Netplay set up with a host and client for each. I get as far as getting into the game, but a message comes up that says "A netplay peer is running a different core. Cannot connect." I'm not exactly sure what this means or how to load a core. We both have the same version Retropie and Retroarch but retroarch does say "No Core" on the settings screen. I'm trying on a Megadrive (Genesis) game that I saw a video of people playing using Netplay.

What am I missing? I've tried searching, YouTubing, etc., but can't figure it out.

Thanks!

[mitu]

@mikespie Please add more info about your system - https://retropie.org.uk/forum/topic/3/read-this-first.

The core means which emulator are you using for the running the game. You need to use the exact version of it and also the exact ROM on both systems. Since you're running a Megadrive rom, the core should be either lr-picodrive (I think this is the default) or lr-genesis-plus-gx (see the Megadrive docs).

[mikespie]

@mitu said in Can't seem to get Netplay to work:

@mikespie Please add more info about your system - https://retropie.org.uk/forum/topic/3/read-this-first.

The core means which emulator are you using for the running the game. You need to use the exact version of it and also the exact ROM on both systems. Since you're running a Megadrive rom, the core should be either lr-picodrive (I think this is the default) or lr-genesis-plus-gx (see the Megadrive docs).

Thank you for your response, sorry for not providing all info. Just from your post I was able to figure it out and have Netplay working / connecting now! However, it seems as though the controllers do not work in a lot of the games while on Netplay. I have tried using different emulators to no avail. An example is Street Fighter II for Genesis, Player 1 controller works fine, but player 2 controller doesn't work at all. Tried a keyboard as well, both which work fine not in Netplay.

My system is a CanaKit - https://amzn.to/2Taj5jf
PI 3 B+ w/ 2.5A power supply
RetroPie V 4.4.4 (skyscraper-pr6-v3)
Built from premade SD image on RetroPie website
I have a USB keyboard, mouse and controller hooked up to it
Controller is working great outside of Netplay, it's an "EasySMX 2.4G Wireless Controller" and also a Geeekpi SNES USB controller
Emulator is lr-genesis-plus-gx

Thanks again!