# UE 5.5 and FMOD 2.03.07 Validation issue

**URL:** https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884
**Category:** Unreal Engine
**Tags:** cpp
**Created:** [May 5, 2025, 5:37pm UTC](https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884 "2025-05-05T17:37:34Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Dzambrano](https://avatars.discourse-cdn.com/v4/letter/d/57b2e6/32.png) [@Dzambrano](https://qa.fmod.com/u/Dzambrano)
#### Post date: [May 5, 2025, 5:37pm UTC](https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884/1 "2025-05-05T17:37:34Z")

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Hello there!

So we just upgraded UE and Fmod plugin and we are having some validation issues.

Our project seems to be running just fine, we have audio playing on editor and we can import new audio files, events, build banks or even go into live update.

The thing is that when trying to “Validate Fmod” on our UE project a message that says “Failed to Load banks” appears, which is weird since the “reloaded fmod banks” message appears on UE botom right corner when opening the project.

Another issue we have is that we cannot preview sounds in editor, when hitting “play” on an fmod event in UE it wont reproduce the sound. However if we place the event on a scene it does play when simulating the game.

When trying to preview the sounds this message appears in the Uotput log:

LogFMOD: Warning: C:\buildagent2\work\c1c3f17eb167c494\studio\_api\src\fmod\_objectlookup.h(125) - Lookup failed for EventModel: {a53a2e69-c591-4974-be00-84561e5b8391}

Additional info:

- Previous versions before upgrading: UE 5.1 & Fmod 2.02.28

- Current Upgraded Versions: UE 5.5 & Fmod 2.03.07

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 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/3/3165a090d20f114493f66c44a0bb974f4fefb05a.png)

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![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/e/e6a99cee944b4b90a3d27de169cd6dff1a84384f.png)

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<div class="post-metadata">

### Author: ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [May 5, 2025, 10:59pm UTC](https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884/2 "2025-05-05T22:59:41Z")

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Hi,

This is a known issue and will be addressed in out next release, unfortunately I don’t have a workaround. I am sorry for the inconvenience.

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<div class="post-metadata">

### Author: ![Dzambrano](https://avatars.discourse-cdn.com/v4/letter/d/57b2e6/32.png) [@Dzambrano](https://qa.fmod.com/u/Dzambrano)
#### Post date: [May 5, 2025, 11:24pm UTC](https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884/3 "2025-05-05T23:24:49Z")

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Noted Connor, thanks.

Is there an ETA for that fix? Or a previous version for the fmod plug-in that we can downgrade to?

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<div class="post-metadata">

### Author: ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [May 5, 2025, 11:35pm UTC](https://qa.fmod.com/t/ue-5-5-and-fmod-2-03-07-validation-issue/22884/4 "2025-05-05T23:35:39Z")

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Unfortunately, I cannot provide an ETA. Downgrading to 2.03.06 should fix the issue.