# FMOD causing UE4 crash at startup

**URL:** <https://qa.fmod.com/t/fmod-causing-ue4-crash-at-startup/18567>\
**Category:** Unreal Engine\
**Created:** [March 23, 2022, 3:29pm UTC](https://qa.fmod.com/t/fmod-causing-ue4-crash-at-startup/18567 "2022-03-23T15:29:39Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [April 29, 2022, 4:33am UTC](https://qa.fmod.com/t/fmod-causing-ue4-crash-at-startup/18567/17 "2022-04-29T04:33:24Z")

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Thank you for sending that over- I have reproduced this crash by swapping in the AssetLookup.uasset file. I have also reproduced the succesive crashes after deleting and regenerating the AssetLookup.uasset file.  
I have found that rerunning the validation tool has got the project back to a good state. Can you please try the following:

- Delete evenything in “ **Content/FMOD** ”
- Clear your project’s build path in FMOD Studio, under _Edit\>Preferences…\>Build\>Built banks output directory (optional):_
- Open your project in Unreal
- With FMOD Studio still open, run the validation in Unreal by going to _Help\>Validate FMOD_

Hopefully that also works for you. Please let me know if it doesn’t and I’ll see what else can be done.

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