Error on opening Atom 1.19.5, workspace can only contain one instance of item [object Object]

Issue and Steps to Reproduce

Update to Atom 1.19.5 Open Atom

Expected Behavior

Atom displays anything

Actual Behavior

Atom is blank

Versions

Atom: 1.19.5
Nuclide: 0.250
Client OS: OS X 10.12.6
Server OS (optional):

Additional Details

Error in console


<embedded>:71614 Uncaught (in promise) Error: The workspace can only contain one instance of item [object Object]
    at ItemRegistry.module.exports.ItemRegistry.addItem (/Applications/Atom.app/Contents/Resources/app/src/item-registry.js:11:21)
    at PaneContainer.didAddPaneItem (/Applications/Atom.app/Contents/Resources/app/src/pane-container.js:269:29)
    at PaneContainer.didAddPane (/Applications/Atom.app/Contents/Resources/app/src/pane-container.js:242:18)
    at Pane.module.exports.Pane.setContainer (/Applications/Atom.app/Contents/Resources/app/src/pane.js:162:32)
    at PaneAxis.module.exports.PaneAxis.setContainer (/Applications/Atom.app/Contents/Resources/app/src/pane-axis.js:97:36)
    at PaneContainer.setRoot (/Applications/Atom.app/Contents/Resources/app/src/pane-container.js:137:21)
    at PaneContainer.deserialize (/Applications/Atom.app/Contents/Resources/app/src/pane-container.js:58:16)
    at WorkspaceCenter.deserialize (/Applications/Atom.app/Contents/Resources/app/src/workspace-center.js:31:30)
    at Workspace.deserialize (/Applications/Atom.app/Contents/Resources/app/src/workspace.js:416:42)
    at /Applications/Atom.app/Contents/Resources/app/src/atom-environment.js:1263:35

Installed packages (apm ls --installed):

Community Packages (40) /Users/kelly/.atom/packages ├── atom-beautify@0.30.5 ├── busy-signal@1.4.3 ├── color-picker@2.2.5 ├── dash@1.7.1 ├── docblockr@0.11.0 ├── file-icons@2.1.11 ├── git-plus@7.9.3 ├── haskell-grammar@0.4.0 ├── highlight-selected@0.13.1 ├── intentions@1.1.5 ├── language-babel@2.73.0 ├── language-ember-htmlbars@0.4.0 ├── language-graphql@0.9.0 ├── language-ini@1.19.0 ├── language-lua@0.9.11 ├── language-pug@0.0.21 ├── language-racket@0.4.0 ├── language-rust@0.4.12 ├── language-swift@0.5.0 ├── language-thrift@1.0.2 ├── linter@2.2.0 (disabled) ├── linter-eslint@8.2.1 ├── linter-jshint@3.1.5 ├── linter-jsonlint@1.3.0 ├── linter-markdown@5.2.0 ├── linter-pug@1.3.1 ├── linter-rubocop@2.1.1 ├── linter-ruby@1.2.6 ├── linter-stylelint@4.0.2 ├── linter-ui-default@1.6.8 (disabled) ├── linter-xo@0.23.1 ├── merge-conflicts@1.4.5 ├── nuclide@0.250.0 ├── nuclide-format-js@0.0.41 ├── set-syntax@0.3.2 ├── sort-lines@0.15.0 ├── source-preview@0.5.2 ├── source-preview-pug@0.2.0 ├── sync-settings@0.8.3 └── tool-bar@1.1.0

facebookarchive / nuclide