Can't generate VS solution the intended way using source rather than binaries

Development Programming & Scripting
2

Here’s the output from UnrealBuildTool without the -rocket switch (which is the default in GenerateProjectFiles.bat):

C:\Users\Neil\Documents\GitHub\UnrealEngine\Engine\Source>..\Binaries\DotNET\UnrealBuildTool.exe -ProjectFiles C:\Users\Neil\Prototype\PrototypeOC\PrototypeOC.uproject
    Binding IntelliSense data... 100%
    Writing project files... 100%

And here’s what I see when I pass the -rocket switch (which works!):

C:\Users\Neil\Documents\GitHub\UnrealEngine\Engine\Source>..\Binaries\DotNET\UnrealBuildTool.exe -ProjectFiles -rocket C:\Users\Neil\Prototype\PrototypeOC\PrototypeOC.uproject
    Discovering modules, targets and source code for project...
    Binding IntelliSense data... 100%
    Writing project files... 100%