Same here, and it's especially annoying because myth was designed with small children in mind who usually need help navigating menus etc or have a bunch of questions about what they are seeing. That's where casting is the most helpful.
Hey there! Casting issues aren't what any of us want to wrestle with! Let's take a look and see if we can get that sorted. Most of time, you can get past this spot of bother by doing the following.
Give those steps a try, and let us know how it goes!