# MacBook Air Mojave failed to start after extension installation

**URL:** <https://discourse.slicer.org/t/macbook-air-mojave-failed-to-start-after-extension-installation/5615>\
**Category:** Support\
**Created:** [February 2, 2019, 1:02am UTC](https://discourse.slicer.org/t/macbook-air-mojave-failed-to-start-after-extension-installation/5615 "2019-02-02T01:02:04Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![DRYAHYA](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dryahya/32/3030_2.png) [@DRYAHYA](https://discourse.slicer.org/u/DRYAHYA)\
**Post date:** [February 2, 2019, 1:02am UTC](https://discourse.slicer.org/t/macbook-air-mojave-failed-to-start-after-extension-installation/5615/1 "2019-02-02T01:02:05Z")

</div>

Operating system:MacBook AIR MOJAVE  
Slicer version: SLICER 4.10.1  
Expected behavior:starting  
Actual behavior:failed to start

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 2, 2019, 2:07am UTC](https://discourse.slicer.org/t/macbook-air-mojave-failed-to-start-after-extension-installation/5615/2 "2019-02-02T02:07:21Z")

</div>

The laptop fails to start or Slicer?  
Which extension did you install?  
Does Slicer start correctly if you disconnect from the network (unplug the network cable and disable wifi)?  
Does Slicer start correctly if you remove [Slicer settings file](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ApplicationSettings#Settings_file_location)?

---

<div class="post-metadata">

**Author:** ![DRYAHYA](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dryahya/32/3030_2.png) [@DRYAHYA](https://discourse.slicer.org/u/DRYAHYA)\
**Post date:** [April 17, 2019, 9:28am UTC](https://discourse.slicer.org/t/macbook-air-mojave-failed-to-start-after-extension-installation/5615/4 "2019-04-17T09:28:57Z")

</div>

Thank you very much

For the benefit response