Uncaught TypeError: Cannot read property 'onDidChangeIcon' of undefined

[Enter steps to reproduce:]

1. Right click file tree
2. “Add Project Folder”
3. Folder adds into the tree, but Type Error pops up, and no icons visible.

Atom: 1.15.0 ia32 Electron: 1.3.13 OS: Microsoft Windows 10 Pro Thrown From: file-icons package 2.1.1

Stack Trace

Uncaught TypeError: Cannot read property ‘onDidChangeIcon’ of undefined

At C:\Users\TheBrenny\.atom\packages\file-icons\lib\service\icon-node.js:30

TypeError: Cannot read property 'onDidChangeIcon' of undefined
    at /packages/file-icons/lib/service/icon-node.js:30:12)
    at /packages/file-icons/lib/consumers/tree-entry.js:41:19)
    at TreeView.track (/packages/file-icons/lib/consumers/tree-view.js:82:25)
    at TreeView.rebuild (/packages/file-icons/lib/consumers/tree-view.js:73:9)
    at disposables.add.atom.project.onDidChangePaths (/packages/file-icons/lib/consumers/tree-view.js:48:45)
    at Function.module.exports.Emitter.simpleDispatch (/app.asar/node_modules/event-kit/lib/emitter.js:25:14)
    at Emitter.module.exports.Emitter.emit (/app.asar/node_modules/event-kit/lib/emitter.js:129:28)
    at Project.module.exports.Project.addPath (/app.asar/src/project.js:288:29)
    at /app.asar/src/atom-environment.js:1011:40
    at /app.asar/src/application-delegate.js:31:16)
    at emitTwo (events.js:106:13)
    at EventEmitter.emit (events.js:191:7)

Commands

     -6:57.9.0 intentions:highlight (input.hidden-input)
     -6:57.7.0 core:save (input.hidden-input)
 13x -6:47.4.0 core:move-up (input.hidden-input)
 24x -6:44.4.0 core:move-down (input.hidden-input)
 19x -6:43.2.0 core:move-up (input.hidden-input)
     -6:40.5.0 intentions:highlight (input.hidden-input)
  4x -6:40.4.0 core:undo (input.hidden-input)
  2x -6:37.4.0 core:redo (input.hidden-input)
     -6:36.8.0 core:undo (input.hidden-input)
     -6:36.2.0 intentions:highlight (input.hidden-input)
     -6:36.1.0 core:save (input.hidden-input)
  5x -6:32.8.0 core:move-left (input.hidden-input)
  3x -6:31.9.0 core:move-up (input.hidden-input)
     -6:15 tree-view:remove-project-folder (div.header.list-item.project-root-header)
     -0:46.9.0 application:add-project-folder (div.header.list-item.project-root-header)
     -0:23.2.0 tree-view:show (atom-workspace.workspace.scrollbars-visible-always.compact-tab-bar.panel-shadows.use-animations.compact-tree-view.blend-tree-view.theme-genesis-syntax.theme-atom-material-ui.has-custom-icons)

Non-Core Packages

atom-beautify 0.29.17 
atom-commander 0.8.8 
atom-material-syntax 1.0.2 
atom-material-ui 1.3.9 
busy-signal 1.3.0 
emmet 2.4.3 
file-icons 2.1.1 
firepad 0.8.0 
genesis-syntax 1.0.9 
genesis-ui 0.5.0 
git-plus 7.3.3 
intentions 1.1.2 
linter 2.1.0 
linter-jsonlint 1.3.0 
linter-pylint 1.2.3 
linter-ui-default 1.2.1 
minimap 4.26.8 
package-sync 1.1.0 
pigments 0.39.1 
platformio-ide-terminal 2.5.0 
script 3.14.1 
SFTP-deployment 1.0.2 

[Alhadis]

@dyaa https://github.com/file-icons/atom#troubleshooting

1. Open the command palette: <kbd>Cmd/Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>P</kbd>
2. Enter file-icons:clear-cache
3. Reload the window, or restart Atom

[llamicron]

I’d like to add that I was using the unfancy-file-icons package, as well as this one, and for me the error happened when I tried to use advanced-open-file. Disabling unfancy-file-icons, clearing the cache, and restarting Atom fixed it. It seems that unfancy-file-icons conflicts with this package, but this one is better anyway.