# AssetLookup.uasset is broken and causing UE4 to crash on startup after building

**URL:** <https://qa.fmod.com/t/assetlookup-uasset-is-broken-and-causing-ue4-to-crash-on-startup-after-building/20881>\
**Category:** Unreal Engine\
**Tags:** ue4\
**Created:** [November 15, 2023, 7:27pm UTC](https://qa.fmod.com/t/assetlookup-uasset-is-broken-and-causing-ue4-to-crash-on-startup-after-building/20881 "2023-11-15T19:27:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![louietaylorcomposer](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@louietaylorcomposer](https://qa.fmod.com/u/louietaylorcomposer)\
**Post date:** [November 15, 2023, 7:27pm UTC](https://qa.fmod.com/t/assetlookup-uasset-is-broken-and-causing-ue4-to-crash-on-startup-after-building/20881/1 "2023-11-15T19:27:26Z")

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Hello,

I have a problem where after I build to UE4 it crashes on start-up every time, I’ve changed nothing except for the creation of some new events/assets and and adding those events to relevant VCA groups.

I’ve got the crash message here:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/5/56fa21493279188512924ce044969fba902fdc1b.png)

I am almost certain this is caused by the assetlookup.uasset file, because it was in my staging area on the git repo for the ue4 project as deleted, which I discarded and pushed and since then it cause loads of issues. Annoyingly, the fmod project file isn’t backed up through version control, so I will probably have to create a new studio project and migrate everything across, which is fine. But I would like to know more about what caused this and if there is a fix.

Thanks so much for your help!

Best,  
Louie

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<div class="post-metadata">

**Author:** ![louietaylorcomposer](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@louietaylorcomposer](https://qa.fmod.com/u/louietaylorcomposer)\
**Post date:** [November 15, 2023, 7:47pm UTC](https://qa.fmod.com/t/assetlookup-uasset-is-broken-and-causing-ue4-to-crash-on-startup-after-building/20881/2 "2023-11-15T19:47:08Z")

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I have been looking into a similar issue on this post [FMOD causing UE4 crash at startup - #17 by jeff\_fmod](https://qa.fmod.com/t/fmod-causing-ue4-crash-at-startup/18567/17), I’ll follow these recovery steps and report back.