Uncaught TypeError: Cannot read property 'split' of undefined

[chrisrink10]

[Enter steps to reproduce below:]

1. Open up project.
2. Switch between open files.
3. See exception.

Atom Version: 0.189.0
System: Mac OS X 10.10.2
Thrown From: remember-session package, v0.5.1

Stack Trace

Uncaught TypeError: Cannot read property 'split' of undefined

At /Users/christopher/.atom/packages/remember-session/lib/remember-session.coffee:87

TypeError: Cannot read property 'split' of undefined
  at atom-workspace.selectTab (/Users/christopher/.atom/packages/remember-session/lib/remember-session.coffee:87:50)
  at atom-workspace.handler (/Applications/Atom.app/Contents/Resources/app/src/space-pen-extensions.js:110:34)
  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:242:29)
  at CommandRegistry.handleCommandEvent (/Applications/Atom.app/Contents/Resources/app/src/command-registry.js:3:61)
  at CommandRegistry.module.exports.CommandRegistry.dispatch (/Applications/Atom.app/Contents/Resources/app/src/command-registry.js:157:19)
  at PaneView.jQuery.fn.trigger (/Applications/Atom.app/Contents/Resources/app/src/space-pen-extensions.js:64:23)
  at PaneView.module.exports.PaneView.onActiveItemChanged (/Applications/Atom.app/Contents/Resources/app/src/pane-view.js:190:19)
  at /Applications/Atom.app/Contents/Resources/app/src/pane-view.js:3:61
  at Emitter.module.exports.Emitter.emit (/Applications/Atom.app/Contents/Resources/app/node_modules/event-kit/lib/emitter.js:82:11)
  at Pane.module.exports.Pane.setActiveItem (/Applications/Atom.app/Contents/Resources/app/src/pane.js:273:22)
  at Pane.module.exports.Pane.activateItem (/Applications/Atom.app/Contents/Resources/app/src/pane.js:337:21)
  at tabs-tab.<anonymous> (/Applications/Atom.app/Contents/Resources/app/node_modules/tabs/lib/tab-bar-view.js:189:24)
  at space-pen-ul.jQuery.event.dispatch (/Applications/Atom.app/Contents/Resources/app/node_modules/jquery/dist/jquery.js:4430:9)
  at space-pen-ul.elemData.handle (/Applications/Atom.app/Contents/Resources/app/node_modules/jquery/dist/jquery.js:4116:28)

Commands

     -2:22.3 editor:move-to-end-of-screen-line (atom-text-editor.editor.is-focused)
  2x -2:22.0 editor:newline (atom-text-editor.editor.is-focused)
  5x -2:20.0 core:move-up (atom-text-editor.editor.is-focused)
  6x -2:19.3 core:move-right (atom-text-editor.editor.is-focused)
  5x -2:18.0 core:move-down (atom-text-editor.editor.is-focused)
     -2:10.9 core:cut (atom-text-editor.editor.is-focused)
     -2:09.5 core:delete (atom-text-editor.editor.is-focused)
     -2:08.9 core:move-up (atom-text-editor.editor.is-focused)
     -2:08.2 core:paste (atom-text-editor.editor.is-focused)
     -2:07.4 core:save (atom-text-editor.editor.is-focused)
     -2:04.9 editor:newline (atom-text-editor.editor.is-focused)
  3x -2:01.8 core:save (atom-text-editor.editor.is-focused)
     -1:06.0 core:cut (atom-text-editor.editor.is-focused)
     -1:05.5 core:backspace (atom-text-editor.editor.is-focused)
     -1:03.5 core:paste (atom-text-editor.editor.is-focused)
     -1:02.8 core:save (atom-text-editor.editor.is-focused)

Config

{
  "core": {
    "themes": [
      "unity-ui",
      "base16-tomorrow-dark-theme"
    ]
  },
  "remember-session": {
    "x": 118,
    "y": 23,
    "width": 1322,
    "height": 820,
    "path": "",
    "treeWidth": 200
  }
}

Installed Packages

# User
atom-beautify, v0.23.2
autocomplete-clang, v0.6.2
language-cmake, v0.1.1
language-lua, v0.9.2
linter-clang, v2.25.1
linter-lua, v0.1.5
remember-session, v0.5.1
unity-ui, v2.0.5

# Dev
No dev packages