Issue Description:

I have a BungeeCord (Waterfall) setup without any issues at all. There is a SpongeForge lobby server without EnderIO (1.12.2). When EnderIO is on the client, the connection is refused by the client. No problem when connecting on a Vanilla server.

What happens:

The connection is refused by the client.

What you expected to happen:

The client to connect normally even if the server does not have EnderIO

Steps to reproduce:

1. Setup a modded server without EnderIO and some mods.
2. Setup a modded client with EnderIO and the others mods.
3. Try to connect to the server.

Affected Versions (Do not use "latest"):

• EnderIO: 5.0.31
• EnderCore: 0.5.37
• Minecraft: 1.12.2
• Forge: 14.23.4.2760
• SpongeForge? yes and no. The issue is the same.
• Optifine? yes and no. The issue is the same.
• Single Player and/or Server? Server

Your most recent log file where the issue was present:

https://gist.github.com/Aang23/0c201507c1c2b9a8e248ff1a2da77546

Ender IO is a client-server mod, it cannot work client-side without its server-side components.

Ender IO is a client-server mod, it cannot work client-side without its server-side components.

I don't think any of us are expecting it to work, we're just expecting it to connect so that we can then use whatever bungeecord mechanics are setup to pass through to the correct server that has the mod installed.