Uncaught TypeError: Cannot read property 'split' of undefined

[blueplanet]

[Enter steps to reproduce below:]

1. ...
2. ...

Atom Version: 0.192.0
System: Mac OS X 10.10.2
Thrown From: layout-manager package, v0.2.3

Stack Trace

Uncaught TypeError: Cannot read property 'split' of undefined

At /Users/gyo/Dropbox/Apps/dot_atom/packages/layout-manager/lib/layout-manager.coffee:79

TypeError: Cannot read property 'split' of undefined
  at Object.module.exports.getFlex (/Users/gyo/Dropbox/Apps/dot_atom/packages/layout-manager/lib/layout-manager.coffee:79:64)
  at Object.module.exports.shrink (/Users/gyo/Dropbox/Apps/dot_atom/packages/layout-manager/lib/layout-manager.coffee:26:13)
  at atom-workspace.<anonymous> (/Users/gyo/Dropbox/Apps/dot_atom/packages/layout-manager/lib/layout-manager.coffee:7:73)
  at atom-workspace.handler (/Applications/Atom.app/Contents/Resources/app/src/space-pen-extensions.js:115:32)
  at atom-workspace.jQuery.event.dispatch (/Applications/Atom.app/Contents/Resources/app/node_modules/space-pen/vendor/jquery.js:4681:9)
  at atom-workspace.elemData.handle (/Applications/Atom.app/Contents/Resources/app/node_modules/space-pen/vendor/jquery.js:4359:46)
  at CommandRegistry.module.exports.CommandRegistry.handleCommandEvent (/Applications/Atom.app/Contents/Resources/app/src/command-registry.js:238:29)
  at /Applications/Atom.app/Contents/Resources/app/src/command-registry.js:3:61
  at KeymapManager.module.exports.KeymapManager.dispatchCommandEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/atom-keymap/lib/keymap-manager.js:519:16)
  at KeymapManager.module.exports.KeymapManager.handleKeyboardEvent (/Applications/Atom.app/Contents/Resources/app/node_modules/atom-keymap/lib/keymap-manager.js:354:22)
  at HTMLDocument.module.exports.WindowEventHandler.onKeydown (/Applications/Atom.app/Contents/Resources/app/src/window-event-handler.js:180:20)

Commands

  2x -0:16.4 blur (atom-text-editor.editor.vim-mode.command-mode)
     -0:15.4 pane:split-down (atom-text-editor.editor.vim-mode.command-mode.is-focused)
     -0:14.6 fuzzy-finder:toggle-file-finder (atom-text-editor.editor.vim-mode.command-mode.is-focused)
     -0:14.6 blur (atom-text-editor.editor.vim-mode.command-mode.is-focused)
     -0:12.7 editor:consolidate-selections (atom-text-editor.editor.mini)
     -0:12.7 core:cancel (atom-text-editor.editor.mini)
  3x -0:12.7 blur (atom-text-editor.editor.mini)
     -0:12.0 ruby-test:toggle (atom-text-editor.editor.vim-mode.command-mode.is-focused)
 16x -0:11.4 vim-mode:move-down (atom-text-editor.editor.vim-mode.command-mode.is-focused)
 14x -0:10.8 vim-mode:move-up (atom-text-editor.editor.vim-mode.command-mode.is-focused)
     -0:09.7 pane:split-down (atom-text-editor.editor.vim-mode.command-mode.is-focused)
 26x -0:06.7 vim-mode:move-up (atom-text-editor.editor.vim-mode.command-mode.is-focused)
 20x -0:04.9 vim-mode:move-down (atom-text-editor.editor.vim-mode.command-mode.is-focused)
  5x -0:04.3 window:decrease-font-size (atom-text-editor.editor.vim-mode.command-mode.is-focused)
  6x -0:01.6 layout-manager:shrink-active-pane (atom-text-editor.editor.vim-mode.command-mode.is-focused)
     -0:00.0 vim-mode:reset-command-mode (atom-text-editor.editor.vim-mode.command-mode.is-focused)

Config

{
  "core": {
    "disabledPackages": [
      "circle-ci",
      "emmet",
      "git-blame"
    ],
    "themes": [
      "atom-dark-ui",
      "base16-tomorrow-dark-theme"
    ]
  }
}

Installed Packages

# User
autocomplete-paths, v1.0.2
autocomplete-plus, v2.10.0
autocomplete-snippets, v1.2.0
bracket-matcher, v0.73.0
custom-title, v0.7.1
file-icons, v1.5.4
highlight-line, v0.10.1
highlight-selected, v0.9.1
language-rspec, v0.3.0
language-slim, v0.3.0
layout-manager, v0.2.3
project-manager, v1.15.5
rails-rspec, v0.3.1
rspec-snippets, v0.4.0
ruby-test, v0.9.5
tasks, v2.0.0
vim-mode, v0.43.0

# Dev
No dev packages