# Unity 6.6 error

**URL:** <https://qa.fmod.com/t/unity-6-6-error/24559>\
**Category:** Unity\
**Created:** [October 9, 2026, 9:21pm UTC](https://qa.fmod.com/t/unity-6-6-error/24559 "2026-10-09T21:21:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![joshrs926](https://avatars.discourse-cdn.com/v4/letter/j/da6949/32.png) [@joshrs926](https://qa.fmod.com/u/joshrs926)\
**Post date:** [October 9, 2026, 9:21pm UTC](https://qa.fmod.com/t/unity-6-6-error/24559/1 "2026-10-09T21:21:10Z")

</div>

I installed the latest FMOD 2.3.15 in an empty Unity 6.6 project and got this error.

[Worker1] UnityException: Calls to “AssetDatabase.AddObjectToAsset\_Obj” are restricted during asset importing. AssetDatabase.AddObjectToAsset() was called as part of running an import in a worker process.  
UnityEditor.AssetDatabase.AddObjectToAsset\_Obj (UnityEngine.Object newAsset, UnityEngine.Object sameAssetFile) (at :0)  
UnityEditor.AssetDatabase.AddObjectToAsset (UnityEngine.Object objectToAdd, UnityEngine.Object assetObject) (at :0)  
FMODUnity.EditorSettings.AddPlatformToAsset (FMODUnity.Platform platform) (at ./Library/PackageCache/com.fmod.fmod-for-unity.v203@4f71248df90c/FMOD/src/Editor/EditorSettings.cs:705)  
System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) (at :0)  
FMODUnity.EditorSettings.AddPlatformsToAsset () (at ./Library/PackageCache/com.fmod.fmod-for-unity.v203@4f71248df90c/FMOD/src/Editor/EditorSettings.cs:697)  
FMODUnity.Settings.OnEnable () (at ./Library/PackageCache/com.fmod.fmod-for-unity.v203@4f71248df90c/FMOD/src/Settings.cs:650)  
UnityEditor.AssetImporters.ScriptedImporter:GenerateAssetData(AssetImportContext)