Have you got more than one copy of the editor open?
Have you tried rebooting your machine?
what do mean. by rebooting the machine. Do you mean unreal or camputer.
The computer 
there will be a problem with that. The problem. I do not own the computer that am coding with.
Ok. I might know what it is.
You can’t just double click the project when you see it in the zip file. You have to unpack the zip file into a folder, then double click the project.
When you first open the project, there’s a map loaded? Just press play
There’s a map file called ‘example’, that one.
i have enter file example. all i can see. Is the picture. That i shared.
i got error. When i tried to open one more time.
Ok. You’re not running 5.1?
i am running the game in 5.0.3
Ok. You need 5.1 
one of the rules mine teacher said. the game need to be developed in 5.0.3
Ok, then all we have is trying to figure out what’s wrong with your code.
If you want to continue, can you put a copy of your code up here? ( main code and function ).
For now, change this
to this
The actors are spawning, but they’re spawning so far off the map you can’t see them…
( notice 50000 in Y, not 5000000 )
ok done