Only thing I can think of is that Moviespawn actor (the thing you’re grabbing the location from) isn’t in the scene yet. Is that spawned or placed in the scene? I don’t know what the classes are of what’s in your screenshot.
Also, did you make sure it’s not falling through the floor or something? While running, you can click on the spawned Spawnmovie instance and look at its properties in real time. Take a look at the location and see where it has spawned. You can ALT Tab or press F11 to get mouse back.