Intro:

I have used the older version in the past server only but it seems this version does not, is there a reason for this or is it a bug?

Issue Description:

Install it as part of a vanilla client supported server but this is the only mod that does not let me connect

What happens:

Vanilla clients are not allowed to connect.

What you expected to happen:

Load and let vanilla clients connect

Script used (Please Pastebin or gist your script, posting an unpasted or ungist'd script will automatically close this issue):

crafttweaker.log file (Please Pastebin or gist your file, posting an unpasted or ungist'd file will automatically close this issue):

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Affected Versions (Do not use "latest"):

• Minecraft: 1.12.2
• Forge: forge-1.12.2-14.23.5.2824-universal
• Crafttweaker: CraftTweaker2-1.12-4.1.19
• Using a server: Yes
• If yes, does the client have the exact same scripts?

Your most recent log file where the issue was present:

[pastebin/gist/etc link here]

Due to forge changes, Server -> client syncing is no longer a thing.

So the mod is needed on both sides.