Game does not run when bluetooth headphones are connected

[Sophie]

Game Version​

2026.8.22.5348

Operating System​

Windows 11,25H2

What Happened​

I installed the game while my headphones (sennheiser momentum 4) where connected over bluetooth.
The install went without problems. But when starting the game for the first time no window would come up.
Checking the event view gave me the error reports below.
I tried starting multiple time with the same error.
Then I looked closer at the error report and after reading "Error initializing output device." I thougth maybe to try it without my headphones connected and it started into the config window. I tried reproducing the problem with the same install without success.
Also tried with a fresh install (run the uninstaller and then the installer) and could not reproduce the problem either
I hope the attached error logs help somewhat to figure out the problem, but without reproducibility it might be hard to figure out.

Reproduction Rate​

once

Additional Info​

First Error in Event Viewer:
Application: KSA.exe
CoreCLR Version: 10.0.1026.32716
.NET Version: 10.0.10
Description: The process was terminated due to an unhandled exception.
Exception Info: Brutal.FmodApi.FmodResultException: ErrOutputInit: Error initializing output device.
at Brutal.FmodApi.ResultExtensions.Check(Result result)
at Brutal.FmodApi.Fmod.Init(FmodSystem system, Int32 maxChannels, InitFlags flags, IntPtr extraDriverData)
at KSA.GameAudinApplicationStart()
at KSA.Program..ctor(IReadOnlyList`1 inArgs)
at KSA.Program.Main(String[] inArgs)

Second Error in Event Viewer:
Faulting application name: KSA.exe, version: 2026.8.22.5348, time stamp: 0x6a3e0000
Faulting module name: KERNELBASE.dll, version: 10.0.26100.9168, time stamp: 0xef4c9cab
Exception code: 0xe0434352
Fault offset: 0x00000000000c187a
Faulting process id: 0x3C58
Faulting application start time: 0x1DD37DC7B48B888
Faulting application path: C:\Program Files\Kitten Space Agency\KSA.exe
Faulting module path: C:\WINDOWS\System32\KERNELBASE.dll
Report Id: 57df792b-6d0b-4935-9328-bd3ba139fa74
Faulting package full name:
Faulting package-relative application ID:

Windows Error Report in Event Viewer:
Fault bucket 1566795832918753508, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: KSA.exe
P2: 2026.8.22.5348
P3: 6a3e0000
P4: KERNELBASE.dll
P5: 10.0.26100.9168
P6: ef4c9cab
P7: e0434352
P8: 00000000000c187a
P9:
P10:

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.53e492df-9c29-4d6c-9f41-7d4c824abf5e.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.04e59510-5a13-4bcf-8de2-6a372b287f21.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.d995dcb8-6020-41ab-b3b8-3caf13a4b52b.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.d32dbafe-5fd2-4e93-bc68-a8855a077b1f.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.dd156e20-8972-44f6-b712-c64dda863d51.tmp.xml

These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_KSA.exe_be6080cb706a912b8b6872a09038164fa56425ae_9036718c_1ee29b46-9726-4bd6-b8a7-183aa00c1904

Analysis symbol:
Rechecking for solution: 0
Report Id: 57df792b-6d0b-4935-9328-bd3ba139fa74
Report Status: 268435456
Hashed bucket: 18738445b30f2d9ea5be608240af40e4
Cab Guid: 0

Headphone Device config event when connecting headphones (for details on driver):
Device SWD\MMDEVAPI\{0.0.0.00000000}.{4e1c2da8-fd22-4f7c-b5d3-8edd89349228} was configured.

Driver Name: audioendpoint.inf
Driver Package ID: audioendpoint.inf_amd64_271c4d03bad18da8
Class GUID: {c166523c-fe0c-4a94-a586-f1a80cfbbf3e}
Driver Date: 03/31/2024
Driver Version: 10.0.26100.1
Driver Provider: Microsoft
Driver Section: NO_DRV
Driver Rank: 0xFF0000
Matching Device ID: MMDEVAPI\AudioEndpoints
Outranked Drivers: c_swdevice.inf:SWD\GenericRaw:00FF3001
Device Updated: false
Parent Device: BTHENUM\{0000110b-0000-1000-8000-00805f9b34fb}_LOCALMFG&0002\8&21cc3fbe&