# \[4.7 Crash\] Mac changing tab

**URL:** <https://forums.unrealengine.com/t/4-7-crash-mac-changing-tab/306256>\
**Category:** Platform & Builds\
**Tags:** UE4-7, unreal-engine, crash, question\
**Created:** [February 7, 2015, 11:38am UTC](https://forums.unrealengine.com/t/4-7-crash-mac-changing-tab/306256 "2015-02-07T11:38:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Footman](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Footman](https://forums.unrealengine.com/u/Footman)\
**Post date:** [February 7, 2015, 11:38am UTC](https://forums.unrealengine.com/t/4-7-crash-mac-changing-tab/306256/1 "2015-02-07T11:38:47Z")

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Hello,

I often get this crash on latest preview build on mac OS 10.10 when changing tab or open some file

> **[Process: UE4Editor-Mac-Debug \[75364\]Path: /User...](https://pastebin.com/H1vTdek5)**
>
> Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

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**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\
**Post date:** [February 7, 2015, 8:09pm UTC](https://forums.unrealengine.com/t/4-7-crash-mac-changing-tab/306256/2 "2015-02-07T20:09:13Z")

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Hi Footman,

Thanks for report! I was able to reproduce a crash by switching between tabs in main tab bar on Mac. I’ve gone ahead and entered a bug report (UE-9399) with my crash log and call stack, and I’ll let you know when I see an update on it. Just to be sure I’m getting same crash as you, can you and attach crash log from your project next time this happens? You can find it in Library (hidden by default, hold Option in Go menu to access it) at ~\Library\Logs\Unreal Engine[YourProjectName]Editor. Thanks!