# Error compiling Master branch

**URL:** <https://forums.unrealengine.com/t/error-compiling-master-branch/11289>\
**Category:** C++\
**Tags:** unreal-engine, Engine-Source-Code, GitHub, Engine-Source-GitHub\
**Created:** [September 12, 2014, 4:03pm UTC](https://forums.unrealengine.com/t/error-compiling-master-branch/11289 "2014-09-12T16:03:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Darkkitten](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Darkkitten](https://forums.unrealengine.com/u/Darkkitten)\
**Post date:** [September 12, 2014, 4:03pm UTC](https://forums.unrealengine.com/t/error-compiling-master-branch/11289/1 "2014-09-12T16:03:05Z")

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The type or namespace name ‘LocaleCodeHelper’ does not exist in the namespace ‘OneSky’ (are you missing an assembly reference?)

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**Author:** ![kylawl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kylawl](https://forums.unrealengine.com/u/kylawl)\
**Post date:** [September 13, 2014, 3:45pm UTC](https://forums.unrealengine.com/t/error-compiling-master-branch/11289/2 "2014-09-13T15:45:43Z")

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This looks like you’re missing the required zip files. You’ll need to download the latest-preview tag code and then unpack the zipfiles provided with that tag. [https://github.com/EpicGames/UnrealEngine/releases/tag/latest-preview](https://github.com/EpicGames/UnrealEngine/releases/tag/latest-preview)