# Verify integrity of engine files on source version?

**URL:** <https://forums.unrealengine.com/t/verify-integrity-of-engine-files-on-source-version/728263>\
**Category:** Feedback & Requests\
**Tags:** source-build, engine, source, unreal-engine, editor, question\
**Created:** [December 14, 2022, 4:16pm UTC](https://forums.unrealengine.com/t/verify-integrity-of-engine-files-on-source-version/728263 "2022-12-14T16:16:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![S\_Q\_R](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@S\_Q\_R](https://forums.unrealengine.com/u/S_Q_R)\
**Post date:** [December 14, 2022, 4:16pm UTC](https://forums.unrealengine.com/t/verify-integrity-of-engine-files-on-source-version/728263/1 "2022-12-14T16:16:50Z")

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Hi.  
I’m on 4.27 source version of the engine.  
Recently lots of materials lost their parent references and stuff just does not render correctly. Is there any option to verify integrity of the engine files simmilar to this option but on build engine from the source?  
Thanks  
 ![obraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/d/6/9d6b2b6bd8e325e4d6e0a8e09c3d2e8e95a4a682.png)