# Unity 2020.3.8f Build fails because FMOD 2.01.09

**URL:** <https://qa.fmod.com/t/unity-2020-3-8f-build-fails-because-fmod-2-01-09/17751>\
**Category:** Unity\
**Tags:** unity\
**Created:** [October 6, 2021, 1:22pm UTC](https://qa.fmod.com/t/unity-2020-3-8f-build-fails-because-fmod-2-01-09/17751 "2021-10-06T13:22:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JanikaBlaah](https://avatars.discourse-cdn.com/v4/letter/j/91b2a8/32.png) [@JanikaBlaah](https://qa.fmod.com/u/JanikaBlaah)\
**Post date:** [October 6, 2021, 1:22pm UTC](https://qa.fmod.com/t/unity-2020-3-8f-build-fails-because-fmod-2-01-09/17751/1 "2021-10-06T13:22:31Z")

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## When I click Build, it runs few seconds and then ends it. The messages I get are about **FMODStudioFootstepsEditor.cs**

## Assets\Editor Default Resources\FMODStudioFootstepsEditor.cs(23,26): error CS0115: ‘FMODStudioFootstepsEditorTwo.OnInspectorGUI()’: no suitable method found to override

## Assets\Editor Default Resources\FMODStudioFootstepsEditor.cs(21,45): error CS0246: The type or namespace name ‘Editor’ could not be found (are you missing a using directive or an assembly reference?)

## Assets\Editor Default Resources\FMODStudioFootstepsEditor.cs(20,2): error CS0246: The type or namespace name ‘CustomEditorAttribute’ could not be found (are you missing a using directive or an assembly reference?)

## Assets\Editor Default Resources\FMODStudioFootstepsEditor.cs(20,2): error CS0246: The type or namespace name ‘CustomEditor’ could not be found (are you missing a using directive or an assembly reference?)

## Assets\Editor Default Resources\FMODStudioFootstepsEditor.cs(7,42): error CS0246: The type or namespace name ‘Editor’ could not be found (are you missing a using directive or an assembly reference?)

Any idea why this happens? Thanks in advance! 🙂

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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:** [October 10, 2021, 11:09pm UTC](https://qa.fmod.com/t/unity-2020-3-8f-build-fails-because-fmod-2-01-09/17751/2 "2021-10-10T23:09:38Z")

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This is likely due to your Editor file being in the “Assets\Editor Default Resources” directory. According to the [Unity docs](https://docs.unity3d.com/Manual/SpecialFolders.html), Editor scripts should be placed inside “Assets\Editor” so that Unity will know to ignore them at build time, so I suggest you create an “Editor” directory and move “FMODStudioFootstepsEditor.cs” into it, and that should solve your problem.