Setting up the property system

Development Programming & Scripting
4

I found the solution. I failed to #include "Engine.h" in the respective file. It is now working flawlessly.

This is how the bare bones MyClass.h file should look like:

#include "MyPluginPrivatePCH.h"
#include "Engine.h"
#include "MyClass.generated.h"

UCLASS()
class MyClass : public UClass {
    GENERATED_BODY()
}

For the sake of completion, the MyPlugin.Build.cs bare bones file ought to look like this:

public class MyPlugin : ModuleRules {
    public MyPlugin(TargetInfo Target) {

        PublicIncludePaths.AddRange(new string[] {
            "MyPlugin/Public",
        });

        PrivateIncludePaths.AddRange(new string[] {
            "MyPlugin/Private",
        });
        
        PublicDependencyModuleNames.AddRange(new string[] {
            "Core",
            // Additional public dependency modules here
        });
        
        PrivateDependencyModuleNames.AddRange(new string[] {
            "CoreUObject",
            "Engine",
            // Maybe also "Slate" and "SlateCore"
            // Haven't tested without these
            // Also additional dependencies here
        });
        
        DynamicallyLoadedModuleNames.AddRange({
            // Dynamically loaded modules here
        });
        
    }
}