Took me a bit due to some Git issues and paring down to the bones but I have something for ya now =)
The project has the bug disabled right now. If you look at the screen shot of the BP_KeypadActor you will see where the true and false are connected to the Cast To blocks. If you hook those up you will find the game functions like I would expect. If you keep them hooked up, save all and quit out, then load it back up you will find the error.