Startup Issue with Minecraft - Incompatible vanilla server

Alessandro_Faucci · September 30, 2023, 9:16am

System Information

Field	Value
Operating System	Windows - Windows 11 Pro on x86_64
Product	AMP ‘Decadeus’ v2.4.6.4 (Mainline)
Virtualization	None
Application	Minecraft
Module	MinecraftModule
Running in Container	No
Current State	Ready

Problem Description

Issue

I installed a Minecraft FTB pack via AMP. I selected from the FTB server setting and chose the Unstable 1.20 forge modpack. I pressed Download and selected the modpack jar file.

The server starts correctly but upon entering the server I see the error Incompatible vanilla server.
Unstable is modpack name.
I noticed that using the server downloaded directly from FTB everything works correctly.

Reproduction Steps

Install FTB modpack Unstable
Run
Minecraft FTB unstable client error message

TABLE · September 30, 2023, 9:34am

After downloading the pack via the ftb server type, you need to change server type to forge and select the forge version required. Leave server jar on autoselect, don’t pick one yourself.

Alessandro_Faucci · September 30, 2023, 9:49am

OK thank you. Now I try. Forge should be 47.1.3.

All ok.

system · October 30, 2023, 9:49am

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