Compilation error upgrading to 2025.1.3

Question

Hello, I tried upgrading my Unreal Engine project from Wwise 2024.1.6 to 2025.1.3 from the Audiokinetic Launcher, but compiling it from IDE gives me some compilation errors due to missing AKMusicSettings and MusicEngine property in IWiseSoundEngineModule. Looking up the function it's missing it on in official docs, it looks like it's not around anymore (https://www.audiokinetic.com/en/public-library/2025.1.3_9039/?source=SDK&id=namespace_a_k_1_1_music_engine_a31b36d28cc268c9ee2593304ce4451bb.html). I feel like some files didn't get updated accordingly, but most of them did. Does anyone know how I should proceed? I can rollback to the state before upgrading to try it again in case something went wrong

 

0>[1/26] Compile [x64] WwiseMusicEngineAPI_Null.cpp
0>WwiseMusicEngineAPI.h(51): Error C2061 : syntax error: identifier 'AkMusicSettings'
0>WwiseMusicEngineAPI.h(59): Error C2061 : syntax error: identifier 'AkMusicSettings'
0>WwiseMusicEngineAPI.h(31): Error C2039 : 'MusicEngine': is not a member of 'IWwiseSoundEngineModule'
0>WwiseSoundEngineModule.h(28): Reference  : see declaration of 'IWwiseSoundEngineModule'
0>WwiseMusicEngineAPI.h(31): Error C2065 : 'MusicEngine': undeclared identifier
0>WwiseMusicEngineAPI_Null.h(39): Error C2061 : syntax error: identifier 'AkMusicSettings'
0>WwiseMusicEngineAPI_Null.h(47): Error C2061 : syntax error: identifier 'AkMusicSettings'
0>WwiseMusicEngineAPI_Null.cpp(22): Error C2761 : 'AKRESULT FWwiseMusicEngineAPI_Null::Init(void)': redeclaration of member is not allowed
0>WwiseMusicEngineAPI_Null.cpp(22): Error C2065 : 'AkMusicSettings': undeclared identifier
0>WwiseMusicEngineAPI_Null.cpp(22): Error C2065 : 'in_pSettings': undeclared identifier
0>WwiseMusicEngineAPI_Null.cpp(24): Error C2143 : syntax error: missing ';' before '{'
0>WwiseMusicEngineAPI_Null.cpp(25): Error C2059 : syntax error: 'return'
0>WwiseMusicEngineAPI_Null.cpp(26): Error C2059 : syntax error: '}'
0>WwiseMusicEngineAPI_Null.cpp(26): Error C2143 : syntax error: missing ';' before '}'
0>WwiseMusicEngineAPI_Null.cpp(31): Error C2143 : syntax error: missing ';' before '{'
0>WwiseMusicEngineAPI_Null.cpp(31): Error C2447 : '{': missing function header (old-style formal list?)

Answer 1

Hi Antonio,

the AkMusicEngine library was removed in Wwise 25.1. You can read about this change in the Important Migration Notes 2025.1 documentation page. It seems that something may have gone wrong during the update and some files didn’t get updated correctly. I recommend removing the Wwise, WwiseNiagara, and WwiseSoundEngine directories from your UnrealProject/Plugins folder, and then reintegrating Wwise into your Unreal project through the Audiokinetic Launcher.