Cobblemon Kotlin Patcher
Make 1.20.1 Cobblemon compatible with mods that rely on later Kotlin versions. i.e. Cynosure & Estrogen
About this Mod
WARNING: Disable Cobblemon! Keep it disabled! Launch the game again after it's first ever launch with this mod.
This mod intends to make 1.20.1 Cobblemon compatible with other mods that rely on a newer version of Kotlin than Cobblemon was packaged with.
If you are using other Cobblemon Addons disable them, launch with this patcher enabled, read the popup, and then ONLY reenable them. Do not enable any Cobblemon main mod jar.
WARNING: I am a total newb at Minecraft mod development and this is likely a poor solution but it works! Hopefully...
What it essentially does is automate the deleteing of two Kotlin folders within the Cobblemon.jar, allowing for a newer version of Kotlin, likely from Fabric Langauge Kotlin, to take it's place. This can be done manually without this mod but I wanted to make things as plug and play as possible for my friends.
The original reason why this was made was to allow Create 6.0 Estrogen and it's dependency, Cynosure, to work with Cobblemon.
If you need help or find any issues my Discord is tsubameuwu.
Available Versions
How to Install Cobblemon Kotlin Patcher on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "Cobblemon Kotlin Patcher". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Cobblemon Kotlin Patcher server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.
Is Cobblemon Kotlin Patcher compatible with fabric?
Cobblemon Kotlin Patcher officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Cobblemon Kotlin Patcher – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Cobblemon Kotlin Patcher consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install Cobblemon Kotlin Patcher with just one click on your server.