Uncaught TypeError: Cannot read property 'expand' of undefined

[code4ape]

[Enter steps to reproduce below:]

1. active MantraPanel
2. double click any thing on the Panel.

Atom Version: 1.7.2
System: Mac OS X 10.10.4
Thrown From: mantrajs package, v0.3.0

Stack Trace

Uncaught TypeError: Cannot read property 'expand' of undefined

At /Users/myu/.atom/packages/mantrajs/lib/directoryHandler.coffee:82

TypeError: Cannot read property 'expand' of undefined
    at Function.module.exports.DirectoryHandler.revealActiveFile (/Users/myu/.atom/packages/mantrajs/lib/directoryHandler.coffee:82:15)
    at HTMLLIElement.<anonymous> (/Users/myu/.atom/packages/mantrajs/lib/directoryHandler.coffee:50:24)
    at HTMLOListElement.jQuery.event.dispatch (/Users/myu/.atom/packages/mantrajs/node_modules/space-pen/vendor/jquery.js:4681:9)
    at HTMLOListElement.elemData.handle (/Users/myu/.atom/packages/mantrajs/node_modules/space-pen/vendor/jquery.js:4359:28)

Commands

     -5:04.1.0 mantrajs:toggle (ol.tree-view.full-menu.list-tree.has-collapsable-children.focusable-panel)

Config

{}

Installed Packages

# User
mantrajs, v0.3.0
meteor-api, v2.20.0
minimap, v4.22.1
pigments, v0.26.0
vim-mode, v0.65.0

# Dev
No dev packages

[macrozone]

duplicate of #27