Which addon is Lib3D?
An in-game error, a load-order warning or a red Dependency line that mentions
user:/AddOns/Lib3D/ — or a folder sitting in your
Documents\Elder Scrolls Online\live\AddOns\ that you do not recognise — belongs to what
is listed below.
Anchors for every claim on this page: the live game runs API 101050 (Update 50, live 2026-06-08). Update 51 is on the public test server now and is scheduled to go live on PC/Mac on September 28, 2026. Feed retrieved 2026-08-22 · corpus snapshot 2026-08-22.
2 addons in the ESOUI catalogue ship a folder called Lib3D, so the folder name alone does not settle it. None of them publishes it as a standalone addon; each bundles its own copy. The game loads exactly one folder of a given name.
| Addon | Relationship to this folder | Downloads, lifetime | Status |
|---|---|---|---|
| RdK Group Tool | bundles a copy | 194,632 | calls removed API |
| RoleCrowns | bundles a copy | 4,652 | not updated since the patch |
How to read the error line
An ESO Lua error is written as
user:/AddOns/<Folder>/<File>.lua:<line>. Only the
<Folder> segment identifies the addon — the file name and the line number are internal to it,
and the addon's display name in the add-on list is frequently different from its folder name. That is the
whole reason this page exists.
“Important: It must not be the causing addon but could be just a library which is missing.” — source, read 2026-08-22
“Attention: If the numberis missing you need to enable them at the ingame addon manager (press ESC to get to the menu -> AddOns) and enable the checkbox "Advanced UI errors".” — source, read 2026-08-22
Paste a whole error into the error-line resolver, or read the walkthrough: which ESO addon is crashing my UI.