Hello I come bearing answers. It's due to the GEngine not being initialized when the WWise module is loaded, you can resolve it by replacing the following in \Plugins\Wwise\Wwise.plugin:
Before:
```
"Modules": [
{
"Name": "Wwise",
"Type": "Runtime",
"LoadingPhase": "PreLoadingScreen"
},
```
After:
```
"Modules": [
{
"Name": "Wwise",
"Type": "Runtime",
"LoadingPhase": "PostEngineInit"
},
```
You need to make sure that nothing in your code is trying to Get the AKAudioDevice or unwittingly causing Wwise to initialise earlier than PostEngineInit as it can cause your program to crash. I hope this helps, it was a real head scratcher