Which addon is __MACOSX?
An in-game error, a load-order warning or a red Dependency line that mentions
user:/AddOns/__MACOSX/ — 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 101051 (Update 51, live 2026-09-28). Update 51 went live on PC/Mac on September 28, 2026. Feed retrieved 2026-10-07 · corpus snapshot 2026-09-28.
18 addons in the ESOUI catalogue ship a folder called __MACOSX, so the folder name alone does not settle it. The standalone one — the copy its own author publishes and updates — is JP Patch for Librarian Book Manager v1.6.3(Menu translation); the others bundle a copy of it inside their own download. The game loads exactly one folder of a given name.
| Addon | Relationship to this folder | Downloads, lifetime | Status |
|---|---|---|---|
| JP Patch for Librarian Book Manager v1.6.3(Menu translation) | ships it as its own addon | 40,542 | not updated since the patch |
| The Elder Cam | ships it as its own addon | 32,552 | not updated since the patch |
| SwissArmyKnife | ships it as its own addon | 24,691 | calls removed API |
| SimpleClock | ships it as its own addon | 18,269 | not updated since the patch |
| Potion Reminder | ships it as its own addon | 18,081 | not updated since the patch |
| PadMerchant | ships it as its own addon | 10,989 | not updated since the patch |
| Mute Bards | ships it as its own addon | 7,418 | not updated since the patch |
| LootWall | ships it as its own addon | 7,126 | not updated since the patch |
| Gear Tracker | ships it as its own addon | 6,876 | not updated since the patch |
| SHIM: Show Helm In coMbat | ships it as its own addon | 6,184 | not updated since the patch |
| Item Titan | ships it as its own addon | 5,752 | not updated since the patch |
| JP Patch for Untaunted v0.1.5(Menu translation) | ships it as its own addon | 4,497 | unknown |
| Ultimate UI Hider (Patch) | ships it as its own addon | 3,658 | not updated since the patch |
| ESOPager | ships it as its own addon | 3,304 | not updated since the patch |
| GuildMemberNoteTemplate | ships it as its own addon | 2,541 | not updated since the patch |
| Cyrodiil Map Labels (10.3.5) | ships it as its own addon | 2,337 | not updated since the patch |
| Undaunted Auto Queue | ships it as its own addon | 188 | not updated since the patch |
| Provisioning Watcher | ships it as its own addon | 176 | 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.