# Meta XR Audio SDK FMOD plugin not able to read .bundle file (MacOS) **URL:** \ **Category:** Unity\ **Tags:** mac, unity\ **Created:** [November 11, 2025, 9:28pm UTC](https://qa.fmod.com/t/meta-xr-audio-sdk-fmod-plugin-not-able-to-read-bundle-file-macos/23628 "2025-11-11T21:28:37Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mysticflute](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mysticflute/32/7139_2.png) [@mysticflute](https://qa.fmod.com/u/mysticflute)\ **Post date:** [November 11, 2025, 9:28pm UTC](https://qa.fmod.com/t/meta-xr-audio-sdk-fmod-plugin-not-able-to-read-bundle-file-macos/23628/1 "2025-11-11T21:28:37Z")
Hello, I’ve been struggling a little bit on getting the Meta XR Audio SDK FMOD plugin working with Unity. I’ve been following the instructions on the Meta website for integrating with FMOD and Unity. On the FMOD side everything seems to be working, I can load in the Meta spatializer without any errors at least. On the Unity side, I have successfully installed the FMOD plugin, configured my project and everything is working with the default FMOD functionality and spatializer. Now the problem is when I am trying to get the Meta plugin working in Unity. There is a step on their guide: > ### **Copy the plugin to the Unity Project** > > For any Unity Project you hope integrate the Meta plugin into, you must also copy the Meta libraries into the Unity project. This is true of any Third Party plugin for FMOD and the details of where to copy the dynamic libraries and what project settings to adjust are found within [FMOD Official Documentation](https://www.fmod.com/docs/2.02/unity/plugins.html#dynamic-plugins). This is where it is quite vague, and unfortunately where I ran into issues. I am copying the files from their package into `Assets/Plugins/FMOD/platforms` as the FMOD docs instructs for external plugins. These are the files I am copying: ![Screenshot 2025-11-11 at 15.57.46](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/0/01a16d19c82eb6d734bc8fb432ba4b9a020d278a.png) And here is where I have copied the files in my Unity project: ![Screenshot 2025-11-11 at 16.02.50](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/5/55b3e2732341e672c04a4987a147b4e179b4adc4.png) ![Screenshot 2025-11-11 at 16.03.31](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/4/4d2f1e5853704db450039de601d737b260cc4c77.png) I’m also configuring the Unity settings for the files like this: ![Screenshot 2025-11-11 at 16.06.36](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/c/c6cf791d25d2e20a0221d786b414e09c57629dc6.png) And finally I’ve added it to the list of dynamic plugins in the FMOD settings: ![Screenshot 2025-11-11 at 16.07.55](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/3/323d5b57285a03bef2bcee5c314b787e7757a4f5.png) When I try to run by pressing play in the editor, it complains that the file is not found: ![Screenshot 2025-11-11 at 16.17.33](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/9/9e567f72a0f0f6bd6f126b9d05fae38c3351b0dc.png) The file is definitely there, in that exact location: ![Screenshot 2025-11-11 at 16.18.13](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/8/8d72a8edee3bf512e3a9d0e0c1da0d30695dc3ec.png) The first thing that’s unclear, for mac should I be copying the `MetaXRAudioFMOD.bundle` file or the `MetaXRAudioFMOD.dylib`file? Based on the other files that ship with the FMOD plugin, it seems the `.bundle` file should be the one. I thought it might be a permissions issue with the MacOS security: ![Screenshot 2025-11-11 at 16.16.23](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/2/236050c98c14d619d5c00fc52fc5d91cb4ed4ceb.jpeg) but I went into settings and allowed the file to load anyway: ![Screenshot 2025-11-11 at 16.16.56](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/d/d94ea137d1f6dea11d3f422231d4a38fe40ce4d9.png) and I also did `xattr -dr com.apple.quarantine MetaXRAudioFMOD.bundle` on the file for good measure. It is not complaining about that anymore, so I don’t think this is the issue. Nothing was working so I tried deleting the `.bundle` file and copied the `.dylib` file instead, and that did seem to load (when I also changed the FMOD dynamic libraries to `libMetaXRAudioFMOD`), but it seems to me its should be working with the bundle file? I’m not sure the dylib file would work on a standalone build. **Versions** - FMOD Studio v2.03.09 - FMOD for Unity v2.03.10 - Unity v6000.2.6f2 - Meta XR Audio SDK FMOD 81.0 Any help would be appreciated, especially regarding the dylib vs bundle file, and why it’s not finding the bundle file even though it’s there. ---
**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:** [November 18, 2025, 5:47am UTC](https://qa.fmod.com/t/meta-xr-audio-sdk-fmod-plugin-not-able-to-read-bundle-file-macos/23628/2 "2025-11-18T05:47:43Z")
It looks like neither the dylib or the bundle have been signed (which is a mac requirement for dynamic library loading): ```auto % codesign -d -r- libMetaXRAudioFMOD.dylib libMetaXRAudioFMOD.dylib: code object is not signed at all % codesign -d -r- MetaXRAudioFMOD.bundle MetaXRAudioFMOD.bundle: code object is not signed at all ``` You might need to take this particular issue up with the Meta’s support. ---
**Author:** ![mysticflute](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mysticflute/32/7139_2.png) [@mysticflute](https://qa.fmod.com/u/mysticflute)\ **Post date:** [November 18, 2025, 10:37pm UTC](https://qa.fmod.com/t/meta-xr-audio-sdk-fmod-plugin-not-able-to-read-bundle-file-macos/23628/3 "2025-11-18T22:37:51Z")
Thanks for looking. I see that both files are not signed. Do you know if loading the bundle file is stricter about this? The dylib file does seem to load without the code signing. ---
**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:** [November 26, 2025, 12:37am UTC](https://qa.fmod.com/t/meta-xr-audio-sdk-fmod-plugin-not-able-to-read-bundle-file-macos/23628/4 "2025-11-26T00:37:38Z")
I would expect both the dylib and the bundle to cause problems if they aren’t signed. Possibly there is some other issue with the bundle, but I’m able to load other third-party plugins fine on Mac, so the problem seems to be confined to MetaXR. I am pretty sure you can sign the dylib yourself for standalone builds, otherwise you may need to reach out to Meta for support.