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Wwise and UE4 not working with C++ projects

+1 vote


I am trying to create a new UE4 project using UE 4.26.2. I can create one without any issues if I select it as a Blueprint project. However, if I then add C++ code, or if I try to create a new C++ project, I get the following error:


Running C:/Program Files/Epic Games/UE_4.26/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="C:/Users/manta/Unreal Projects/Test_03/Test_03.uproject" -TargetType=Editor -Progress -NoEngineChanges -NoHotReloadFromIDE
Creating makefile for Test_03Editor (no existing makefile)
ERROR: Unable to instantiate module 'AkAudio': System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Program Files\Epic Games\UE_4.26\Engine\Plugins\Wwise\ThirdParty\x64_vc160\Profile\bin'.
          at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
          at System.IO.FileSystemEnumerableIterator`1.CommonInit()
          at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`1 resultHandler, Boolean checkHost)
          at System.IO.Directory.GetFiles(String path, String searchPattern)
          at AkUEPlatform.GetAllLibrariesInFolder(String LibFolder, String Extension, Boolean RemoveLibPrefix, Boolean GetFullPath) in c:\Program Files\Epic Games\UE_4.26\Engine\Plugins\Wwise\Source\AkAudio\AkAudio.Build.cs:line 54
          at AkAudio..ctor(ReadOnlyTargetRules Target) in c:\Program Files\Epic Games\UE_4.26\Engine\Plugins\Wwise\Source\AkAudio\AkAudio.Build.cs:line 300
       (referenced via default plugins -> Wwise.uplugin)


I have followed the instructions on the plugin installation, double, and tripple checked, but I still get this error ONLY when trying to make a C++ project. Again, Everything works fine if I create a Blueprint project. It only breaks when trying to ad C++.



asked Jun 17, 2021 in General Discussion by Brennan A. (120 points)

1 Answer

+1 vote
I was running into a similar issue -- the problem for me was that I'd copied the entire SDK directory to ...\Plugins\Wwise\ThirdParty\, as opposed to copying the subdirectories individually (i.e. ..\Plugins\Wwise\ThirdParty\x64_vc160 for instance). Can you check to make sure that your ThirdParty folder contains all the folders listed in step 6 of

Additionally, I also had to make the adjustment to AkLateReverbComponent.h mentioned here in order to get the C++ project to compile successfully.

Hope this is helpful!
answered Jun 22, 2021 by Dave S. (210 points)
That seems to be what the problem was! Thank you.