Adding LiteLoader to a FTB modpack Client (1.6.x+)


  • Open the FTB Launcher
  • Go to the 'Options' tab and make a note of the 'Install folder...'


  • Browse to the FTB install folder
  • Browse to this location within the FTB install folder create any directories that don't exist: \libraries\com\mumfrey\liteloader\1.6.4



  • Click OK
  • Now browse to your modpack's 'minecraft' folder: \\minecraft
  • Find the pack.json file and open it in a text editor. e.g. Notepad


  • Add '--tweakClass com.mumfrey.liteloader.launch.LiteLoaderTweaker' to the "minecraftArguments" section (line 2)
  • Add the following to the top of the libraries section:

"name": "com.mumfrey:liteloader:1.6.4",
"url": ""

  • Save the file


  • 25796 Users Found This Useful

Was this answer helpful?

 Print this Article

Also Read

FTB Unstable 1.8 v3.0.42 : Timeout disconnect on join

There is a bug in the 3.0.42 client of Unstable 1.8. After connecting to the server the Just...

Installing a Feed The Beast Server on Multicraft

We reccommend that you have at server with at least 2GB of RAM if you wish to run a Feed The...

Updating a Feed The Beast Server on Multicraft

Changing the server option in the control panel does not change the server it just chooses a...

How to select the Modpack Build in the Feed the Beast Launcher

The Feed the beast client will ask you to update your game when a new version is released, when...