Startup Issue with Minecraft - Cannot install necessary Forge version, AMP forces old mod loader

System Information

Field Value
Operating System Linux - Ubuntu 24.04.3 on x86_64
Product AMP ‘Phobos’ v2.6.4.2 (Mainline)
Virtualization None
Application Minecraft
Module MinecraftModule
Running in Container No
Current State Failed

Problem Description

Issue

I am trying to run a 1.20.1 modpack (Beyond Depth) for an SMP, and several mods require Forge v.47.4.10, but AMP only allows up to 47.4.5. I tried to circumvent this by installing 47.4.10 in the directory manually, but according to logs it still insists on booting with 47.4.5. manual install worked the first time i tried it, but after creating a new instance, it no longer does. How do i force it to use the manual installation of 47.4.10?

Reproduction Steps

  • Selected Forge version and clicked ‘update’
  • went into server instance directory and ran 'java -jar forge-1.20.1-47.4.10-installer -InstallServer
  • performed the same but installed via GUI installer, selected install server
  • launched server, see that it uses 47.4.5 selected instead of 47.4.10 installed
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