Everyone who has tried it on my side so far has had problems getting it to work, once they got it to inject it simply never worked at all.
I think they're just being casual about it, I'll try it as soon as my update finishes and give some feedback.
Edit : Tried it on Winject, Vita Injector, and PerX. It injects but when I press insert no menu appears.
The dll error persists even though I have all missing dlls and all microsoft packages needed.