The file:
Plugins\FMODStudio\Intermediate\Build\Win64\UnrealEditor\Inc\FMODStudio\UHT\FMODCallbackHandler.gen.cpp
Is generating with an #include “allbackHandler.h” instead of “FMODCallbackHandler.h”, preventing a build. Tested on two machines, installing the plugin from scratch each time. I’m able to manually edit the file to fix it temporarily, but this gets reset if I ever need to generate Visual Studio project files.
I’m using Unreal Engine 5.6.1, with the FMOD Studio Plugin version 2.03.09 for Unreal 5.6. I have also tested the plugin version 2.03.08, which has the same issue.