# Lots of Warnings in Unity 6.2

**URL:** <https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701>\
**Category:** Unity\
**Created:** [November 22, 2025, 6:16am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701 "2025-11-22T06:16:46Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![tom-bossa](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tom-bossa/32/9307_2.png) [@tom-bossa](https://qa.fmod.com/u/tom-bossa)\
**Post date:** [November 22, 2025, 6:16am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/1 "2025-11-22T06:16:46Z")

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These are likely harmless for the most part, but if you had a project with warnings as errors this would be quite bad.. There’s 98 warnings of deprecated unity api’s in the fmod folder all to do with TreeViewItem, TreeView and TreeViewState along the lines of …

````auto
Assets\Plugins\FMOD\src\Editor\FileReorganizer.cs(453,47): warning CS0618: 'TreeViewItem' is obsolete: 'TreeViewItem is now deprecated. You can likely now use TreeViewItem<int> instead and not think more about it. But if you were using that identifier to store InstanceID data, you should instead opt to upgrade your TreeViews to use TreeViewItem<InstanceID> to get the proper typing.'
```

````

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<div class="post-metadata">

**Author:** ![tom-bossa](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tom-bossa/32/9307_2.png) [@tom-bossa](https://qa.fmod.com/u/tom-bossa)\
**Post date:** [November 22, 2025, 6:17am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/2 "2025-11-22T06:17:48Z")

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This is with FMOD plugin 2.03.10

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [November 26, 2025, 5:51am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/3 "2025-11-26T05:51:28Z")

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Thanks for letting us know.

It looks like Unity introduced a deprecation in a patch, we are aiming to have this fixed for our next release.

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<div class="post-metadata">

**Author:** ![tom-bossa](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tom-bossa/32/9307_2.png) [@tom-bossa](https://qa.fmod.com/u/tom-bossa)\
**Post date:** [November 28, 2025, 1:15pm UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/4 "2025-11-28T13:15:13Z")

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sounds good thanks for the response!

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<div class="post-metadata">

**Author:** ![minux-lee](https://avatars.discourse-cdn.com/v4/letter/m/3e96dc/32.png) [@minux-lee](https://qa.fmod.com/u/minux-lee)\
**Post date:** [January 14, 2026, 6:09am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/5 "2026-01-14T06:09:29Z")

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Hi, when are you going to release the next version?

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [January 21, 2026, 4:07am UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/6 "2026-01-21T04:07:26Z")

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This fix is available now in 2.03.12.

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<div class="post-metadata">

**Author:** ![tom-bossa](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tom-bossa/32/9307_2.png) [@tom-bossa](https://qa.fmod.com/u/tom-bossa)\
**Post date:** [January 29, 2026, 11:37pm UTC](https://qa.fmod.com/t/lots-of-warnings-in-unity-6-2/23701/7 "2026-01-29T23:37:52Z")

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Thanks for the update, all seems to be working well with no warnings in 6.3 as well