Issue title: Navigator Error
 Issue body: ## Main error
Application <b>spyder</b> launch may have produced errors.
## Traceback
```
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0
[warn] kq_init: detected broken kqueue; not using.: Undefined error: 0

```
## System information
```
python: 3.6.1
language: en
os: Darwin;16.7.0;Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64;x86_64;i386
version: 1.6.2
platform: osx-64
qt: 5.6.2
pyqt: 5.6.0
conda: 4.3.21
```

 Comments: 
 Comment 0: **See Issue #1778 for more information on how to fix this.**

---

Closing as duplicate of #1778


---

Please remember to update to the latest version of Navigator to include
the latest fixes.

Open a terminal (on Linux or Mac) or the Anaconda Command Prompt (on windows)
and type:

```
$ conda update anaconda-navigator
$ conda update navigator-updater
```

{'source': 'GithubIssues', 'repo_name_with_owner': 'ContinuumIO/anaconda-issues', 'issue_id': 260050456, 'repo_stars': 609.0}