# Unable to use FMOD 2.02/2.03 in UE 5.5.4 **URL:** \ **Category:** Unreal Engine\ **Tags:** ue5\ **Created:** [April 12, 2025, 3:12pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792 "2025-04-12T15:12:09Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Underwaternya](https://avatars.discourse-cdn.com/v4/letter/u/ee7513/32.png) [@Underwaternya](https://qa.fmod.com/u/Underwaternya)\ **Post date:** [April 12, 2025, 3:12pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/1 "2025-04-12T15:12:09Z")
Hi there, I’m using UE5.5 with FMOD integration (I’ve tried both 2.02 and 2.03), and I’m encountering an issue where the FMOD plugin **fails to load banks** during validation inside the Editor — even though everything works fine during gameplay. I also cannot play FMOD events in the Content Browser. When I place an `FMODAmbientSound` actor in the level and select an event from the dropdown menu, the Output Log repeatedly shows:`LogFMOD: Warning: ... fmod_objectlookup.h(125) - Lookup failed for EventModel: {216426ef-fae8-4ebc-a8a2-ad3e6efee2de}` ### The specific problem: - When I go to `Help > Validate FMOD`, it pops up an error dialog: - However, when I press Play: * * * ### What I’ve confirmed: - `Load All Banks` is enabled in Project Settings - `Bank Output Directory` is set to `FMOD` (not `/Content/FMOD`) - `.bank` files (`Master.bank`, `Master.strings.bank`) are present on disk - Events are assigned to banks in FMOD Studio - `File > Reload Banks` runs without errors - Project compiles and runs as expected * * * ### My question: Why does `Validate FMOD` fail with “Failed to load banks” if everything works fine during runtime? Is this a bug with the Editor-time validation process? Is there any workaround to allow the Editor to recognize and use `.bank` files for **previewing FMOD events** , especially inside tools like the Animation Editor or when triggering events from `FMODAmbientSound`? Any help or insight would be greatly appreciated! ---
**Author:** ![skiesys](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/skiesys/32/8358_2.png) [@skiesys](https://qa.fmod.com/u/skiesys)\ **Post date:** [April 14, 2025, 2:22pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/2 "2025-04-14T14:22:37Z")
Can confirm this issue, just created new project with latest FMOD plugin/studio versions and receive this `Lookup failed for EventModel` every time i try to click or play event from editor. Downgrading to 2.03.06 helps. ---
**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\ **Post date:** [April 15, 2025, 1:50am UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/3 "2025-04-15T01:50:44Z")
Hi, Thank you both for providing the detailed information and reproduction steps. I have been able to reproduce the issue on my end and have passed it on to our development team for further investigation. Unfortunately, there’s no temporary workaround at the moment, so downgrading to **2.02.27 or 2.03.06** is definitely a good option. I will keep you informed as soon as we have any updates. ---
**Author:** ![Wsahl](https://avatars.discourse-cdn.com/v4/letter/w/ea666f/32.png) [@Wsahl](https://qa.fmod.com/u/Wsahl)\ **Post date:** [April 22, 2025, 1:58pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/4 "2025-04-22T13:58:07Z")
I can confirm this issue as well, getting the exact same error messages. Have not tried downgrading yet, keeping an eye on this post if it gets an update. ---
**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\ **Post date:** [April 22, 2025, 10:12pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/5 "2025-04-22T22:12:26Z")
Thank you, I have added you to the list. ---
**Author:** ![shanegravestock](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@shanegravestock](https://qa.fmod.com/u/shanegravestock)\ **Post date:** [June 11, 2025, 4:03pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/6 "2025-06-11T16:03:58Z")
This bug seems present in FMOD 2.02.28, is that also confirmed? ---
**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\ **Post date:** [June 11, 2025, 11:31pm UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/7 "2025-06-11T23:31:16Z")
Hi, > [@shanegravestock](#): > > This bug seems present in FMOD 2.02.28, is that also confirmed? Yes, we have confirmed that this bug is also present in FMOD 2.02.28. We have just released our latest version, FMOD 2.02.29 and 2.03.08, which should include a fix for this issue. Could you please try updating to the latest version and let us know if the problem persists? ---
**Author:** ![Wsahl](https://avatars.discourse-cdn.com/v4/letter/w/ea666f/32.png) [@Wsahl](https://qa.fmod.com/u/Wsahl)\ **Post date:** [July 29, 2025, 6:31am UTC](https://qa.fmod.com/t/unable-to-use-fmod-2-02-2-03-in-ue-5-5-4/22792/8 "2025-07-29T06:31:57Z")
Hi! I can confirm the issue is fixed in 2.03.08. Thanks! 🤩