I have both FilmPack5 and PhotoLab - and FP happily integrates with PL (as does ViewPoint)
There does not need to be - 'cos FilmPack functionality is fully integrated into PL (assuming one owns both products) … as shown here;

- this allows one to render any of the FilmPack film-types from directly inside PhotoLab … FilmPack itself just sits in the background - you don’t need to interact with it at all.