Great work eXi, thank you a lot!
Here comes the interesting part, even your project is not working for me. 
What i do:
Open project in UE 4.76 (btw, which version do you use exactly?)
Click Compile
Set number of players to 2 and start playing
Press H on viewport 1
Press F on viewport 2
Result: “Num Search Results: 0”
Thats exacly the same problem that i have with my project. Strange. 