Update Failure with Minecraft - Minecraft Java FTB Unstable Not Launching

[Nathan_York]

System Information

Field	Value
Operating System	Windows - Windows Server 2019 on x86_64
Product	AMP ‘Decadeus’ v2.4.8.0 (Mainline)
Virtualization	None
Application	Minecraft
Module	MinecraftModule
Running in Container	No
Current State	Failed

Problem Description

Issue

I have attempted to run a FTB Unstable 1.5 Minecraft Server. Getting error that the minecraftserver.jar is missing and when I change the jar I get an error that jus says something is wrong with the files.

Reproduction Steps

• Selected FTB Pack Version and hit install in configuration
• Attempt to start server and receive error stating minecraftserver.jar is missing
• changed the name of the server file to match minecraftserver.jar
• In configuration selected the serve jar file

[ThePotatoKing]

You need to switch the server type back to Forge and set the right Forge version.
Full guide here:

Forge Frequently Asked Questions

Forge Frequently Asked Questions How do I run Forge using: start.sh/start.bat? No need! AMP handles all that for you. Just select the version of Forge you’ll need, hit update, and start your server. Where do I put custom start up arguments? You can find this options under: Configuration → Minecraft → Java and Memory → Additional java options I installed a modpack using AMP’s FTB downloader, why did it start in Vanilla? or The update manager reported a successful update, but ./Minecraft/minecr…