I’m following along in this section and for the life of me cannot get the door to rotate. I actually copied and pasted the code for the OpenDoor component from github right into the BeginPlay() method. I then build and play. The door stays in the same position no matter what Yaw I set it at. I’m using engine 4.13 so I’m not sure if this is some sort of but or change that won’t allow it.
Well, it turns out I just needed to close out of UE4 and relaunch. Problem solved. 
Well it turns out he forgot to mention that you have to set the door to MOVABLE MESH rather than the default static mesh when you drop the prop asset to the world/level.
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You sir, deserve a cupcake.
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