Files Updater

The Files Updater is where you manage the game content your players download. Anything you upload here is synced to players’ machines the next time they launch or update their game. Deletions are also propagated — a file removed here will be removed from players’ installations on their next sync.

The root folder displayed in the Files Updater corresponds exactly to the game installation directory on the player’s machine (e.g. .myserver/).

Selecting a profile

If you have multiple profiles, select the target profile using the tabs at the top of the page. If only the default profile exists, the tabs are hidden.

Files

The Files Updater works like a file manager. You can:

• Upload files and folders from your computer (drag and drop is supported).
• Create new folders directly in the interface.
• Rename and delete existing files and folders.
• Edit small text-based files (such as .txt or .json config files) directly in the browser.

Recommended folder structure

Follow the standard Minecraft directory layout to ensure compatibility:

/ (modpack folder)
├─ mods/
│  ├─ mod1.jar
│  └─ mod2.jar
├── config/
│  ├─ mod1.toml
│  └─ mod2.toml
├─ resourcepacks/
│  ├─ pack1.zip
│  └─ pack2.zip
└─ server.dat

What not to upload

Avoid uploading files that are session-specific, player-specific, or regenerated on each run:

• logs/
• saves/ (unless you intentionally want to distribute a pre-built map)
• screenshots/
• usercache.json, usernamecache.json
• The versions/ folder (see Mod loader configuration below)

Handling options.txt

If you upload an options.txt, it will overwrite players’ settings on every sync. Uploading it once to set default keybinds is reasonable. Uploading it on every modpack update will reset players’ volume, sensitivity, and video settings repeatedly — avoid doing this unless intentional.

Mod loader configuration

The Mod loader section, located at the bottom of the page, controls the Minecraft version and modding engine for each profile. When players launch the game, EML Lib reads this configuration to download the correct game JARs, libraries, and loader installer.

To edit, hover over the section and click the edit button.

Configuration options

Loader — The modding API to use for this profile:

Value	Description
Vanilla	Standard Minecraft, no mods.
Forge	The classic mod loader.
NeoForge	A modern fork of Forge.
Fabric	A lightweight, modular mod loader.
Quilt	A fork of Fabric with additional features.

Minecraft version — The game version (e.g. 1.21.1). Must match the version your mods and server are built for.

Loader version — The specific version of the selected loader. For Vanilla, this field is not applicable. For all other loaders, use the latest stable version unless you have a specific reason not to.

Relationship with Files Updater

Loader settings and the Files Updater are complementary:

• Files Updater manages the content your players download: mods, configs, resource packs.
• Loader settings manages the engine that runs that content: the Minecraft version and mod loader.

Both must be configured for a profile to launch correctly.