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gregWiki/docs/guides/enduser-workshop.md
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id, title, sidebar_label, description, sidebar_position, tags
id title sidebar_label description sidebar_position tags
enduser-workshop End-User Guide — WorkshopManager End-User Guide How to browse, install, and manage Data Center mods using the WorkshopManager. 10
audience:enduser
workshop

End-User Guide — WorkshopManager

This guide is for players who want to install and manage mods for Data Center using the WorkshopManager desktop app.

What you need

  • Data Center installed via Steam.
  • Steam running and logged in.
  • WorkshopManager (WorkshopUploader.exe) — either built from source or provided as a release.

Installation

You can run WorkshopManager from any folder you prefer (for example Program Files, Desktop, Downloads, or <Data Center install>/WorkshopUploader/).

  1. Run the latest GregToolsModmanager-<version>-Setup.exe.
  2. Complete the installer wizard (default path is under Program Files).
  3. Start the app from the Start Menu or desktop shortcut.

Option B — Portable / ZIP build

  1. Download or build the WorkshopManager files.
  2. Extract/copy the folder to any location you want.
  3. Launch WorkshopUploader.exe directly from that folder.

After startup, the Steam status indicator in the top-right should turn green.

Browsing mods (Mod Store)

  1. Open the Mod Store tab.
  2. Use the Store sub-tab to browse all available mods.
  3. Filter by tag (vanilla, modded, melonloader, fmf, framework) or sort by popularity, date, score, etc.
  4. Use the Search bar to find specific mods by name.
  5. Click on any mod to see its detail page with full stats, description, and action buttons.

Installing mods (Subscribe)

  1. In the Store or on an item's detail page, click Subscribe.
  2. Steam downloads the mod automatically.
  3. Check the Installed sub-tab to see all your subscribed mods.

Subscribed mods are managed by Steam — they update automatically when the author publishes changes.

Favorites

  1. On an item's detail page, click Favorite to bookmark it.
  2. View all your favorites in the Favorites sub-tab.
  3. Click Unfavorite to remove.

Voting

On an item's detail page:

  • Click Vote Up to recommend the mod.
  • Click Vote Down if there's a quality issue.

Your votes help the community find the best mods.

Dependency Health (Health tab)

The Health sub-tab checks whether your game has:

  • MelonLoader installed
  • Il2Cpp interop assemblies generated
  • FrikaModFramework core DLL
  • FMF plugins directory
  • Mod config directory

If anything is missing, follow the instructions shown.

Installing MelonLoader

  1. Go to the Health tab and click Download page.
  2. Download the latest MelonLoader Installer from GitHub.
  3. Run the installer, select Data Center as the game, choose IL2CPP.
  4. Start the game once and close it (this generates required assemblies).

Troubleshooting

"Steam - offline" in the title bar

  • Make sure Steam is running and you are logged in.
  • Ensure steam_appid.txt (containing 4170200) exists next to WorkshopUploader.exe.
  • If you use the portable/ZIP variant, make sure you copied the full app folder (not just the .exe).

Mod does not load in-game

  • Check MelonLoader/Latest.log in the game directory.
  • Ensure FrikaModdingFramework.dll is in <game>/Mods/.
  • Verify the mod DLL is also in <game>/Mods/ or <game>/FMF/Plugins/.

Subscription does not appear

  • Wait a few seconds and refresh the Installed list.
  • Steam may need a moment to process the subscription.

App crashes only after installer install

  • Reinstall using the latest setup build.
  • Open Settings -> Logs and include the newest log lines when reporting the issue.
  • If available, report crash details via GitHub Issues.

Reporting bugs and issues

If you find a bug, crash, or unexpected behavior, please open an issue on GitHub:

To help us fix issues faster, include:

  • What you were doing when the problem happened
  • Clear steps to reproduce
  • Your app version and Windows version
  • Error message or screenshot (if any)
  • Relevant logs from Settings -> Logs
  • A repro ZIP from Settings -> Create repro bundle

Uninstalling mods

  1. Go to the Installed sub-tab.
  2. Click Unsubscribe on the mod you want to remove.
  3. Steam removes the mod files automatically.