# Trying to Setup an Audio Branch where 2 sound Designers can work on **URL:** \ **Category:** Unreal Engine\ **Created:** [October 8, 2025, 3:44pm UTC](https://qa.fmod.com/t/trying-to-setup-an-audio-branch-where-2-sound-designers-can-work-on/23441 "2025-10-08T15:44:32Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![giliam](https://avatars.discourse-cdn.com/v4/letter/g/ac8455/32.png) [@giliam](https://qa.fmod.com/u/giliam)\ **Post date:** [October 8, 2025, 3:44pm UTC](https://qa.fmod.com/t/trying-to-setup-an-audio-branch-where-2-sound-designers-can-work-on/23441/1 "2025-10-08T15:44:32Z")
Hello Fmod Folks! We have started to work on a game where we are trying to setup our seperate FMOD unreal branch in Diversion. The idea was to always merge the main branch with our audio branch and only merge with the main once we are happy with the parts we have worked on. When we started out everything went quite smoothly, FMOD playing events, we merged FMOD projects in diversion(seperate REPO). As soon as the other sound Designer made an update, things turned sour. I switch to the branch, i want to playtest in the editor and get the following error: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp] [Line: 795] BulkData compressed header read error. This package may be corrupt! 0x00007ffdb8a00043 UnrealEditor-Core.dll!UnknownFunction 0x00007ffdb8a7b156 UnrealEditor-Core.dll!UnknownFunction 0x000001d1c3b7bb94 UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x000001d1c3bb0a2d UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x000001d1c3b803f6 UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x000001d1c3ba8610 UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x000001d1c3ba7d65 UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x000001d1c3bc97c1 UnrealEditor-EasyMultiSave.dll!UnknownFunction 0x00007ffe00486d20 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0048a364 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00462fd8 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0043231c UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0043c670 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00462b74 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00462fd8 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0046281c UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00056164 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00460cb6 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffdde4b78ad UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e3091 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e253e UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde36f5e2 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde413143 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e2722 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e253e UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde48c54a UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4cd129 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e2722 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e253e UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde36d3c4 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde3ff11b UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e2722 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e253e UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4cc811 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e2722 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4e253e UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde285502 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde285c6f UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde48888c UnrealEditor-UMG.dll!UnknownFunction 0x00007ffdde4eb9b6 UnrealEditor-UMG.dll!UnknownFunction 0x00007ffe00056164 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe004456af UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0045ec14 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00462fd8 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe0046281c UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00056164 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffe00460cb6 UnrealEditor-CoreUObject.dll!UnknownFunction 0x00007ffdb3ae4b61 UnrealEditor-Engine.dll!UnknownFunction 0x00007ffdb4c765c5 UnrealEditor-Engine.dll!UnknownFunction 0x00007ffdb4c508a1 UnrealEditor-Engine.dll!UnknownFunction 0x00007ffdb4d1f0a0 UnrealEditor-Engine.dll!UnknownFunction 0x00007ffdac443474 UnrealEditor-UnrealEd.dll!UnknownFunction 0x00007ffdad115956 UnrealEditor-UnrealEd.dll!UnknownFunction 0x00007ff795659ce4 UnrealEditor.exe!UnknownFunction 0x00007ff79567e5ac UnrealEditor.exe!UnknownFunction 0x00007ff79567e6ba UnrealEditor.exe!UnknownFunction 0x00007ff79568209e UnrealEditor.exe!UnknownFunction 0x00007ff795694e44 UnrealEditor.exe!UnknownFunction 0x00007ff7956980fa UnrealEditor.exe!UnknownFunction 0x00007ffe608ae8d7 KERNEL32.DLL!UnknownFunction We tried deleting and redownloading the whole project with diversion, but the same things happens when i switch to the audio branch. This is bugging me for 3 days now and I’m curious if anybody can point us in the right direction in solving this problem. Cheers, Giliam ---
**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\ **Post date:** [October 9, 2025, 9:30pm UTC](https://qa.fmod.com/t/trying-to-setup-an-audio-branch-where-2-sound-designers-can-work-on/23441/2 "2025-10-09T21:30:03Z")
Hi, Thanks for the information. Could I please grab your Unreal Engine and FMOD integration version number? Unfortunately, I am able to gather much information from that callstack. We have [Unreal Integration | User Guide - Source Control](https://fmod.com/docs/2.03/unreal/user-guide.html#source-control) which may have some useful information. ---
**Author:** ![giliam](https://avatars.discourse-cdn.com/v4/letter/g/ac8455/32.png) [@giliam](https://qa.fmod.com/u/giliam)\ **Post date:** [October 15, 2025, 1:11pm UTC](https://qa.fmod.com/t/trying-to-setup-an-audio-branch-where-2-sound-designers-can-work-on/23441/3 "2025-10-15T13:11:20Z")
Hello, After trying alot of things i found out the cause! Here it goes: Hey if anyone ever gets the following error: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp] [Line: 795] BulkData compressed header read error. This package may be corrupt! you may need to import someone else’s EMS (Easy Multi Save) Plugin folder Baza\Plugins\EasyMultiSave 1 So delete your own EMS folder, 2 Download Someone else’s EMS with a working Unreal project. 3 Paste it into the plugins folder. it was driving me crazy since it was only happening on my computer so no one could replicate my problem. just putting it out there, it had me stuck for a week. Cheers! ---
**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\ **Post date:** [October 15, 2025, 10:23pm UTC](https://qa.fmod.com/t/trying-to-setup-an-audio-branch-where-2-sound-designers-can-work-on/23441/4 "2025-10-15T22:23:58Z")
Thank you for sharing your solution!