Hi Stormharrier,
You need to ‘export’ the UMyBlueprintHelper library using a macro named your game name, so it should like like this in MyBlueprintHelper.h:
UCLASS(stuff)
class MYGAME_API UMyBlueprintHelper : public UBlueprintLibrary
{
…
}
You can export the whole class using MODULENAME_API like I showed above, or choose to only export specific methods by using that macro on individual functions (but you also want to use MinimalAPI inside of UCLASS() if you do this, so that methods like GetClass()/etc… that are autogenerated get exported).
Cheers,
Michael Noland