I have recently started making my own zombie map all has been going very well, i have many rooms and doors. I have fixed all the lighting and done all the zoning however today i have tried to add another window and barrier (i currently have 3) so i copied one of my existing barriers and put it into a new window, however when i try to start my game it compiles everything and i see the activation loading screen then all of a sudden the screen goes black and i cannot close the game so i have to restart my computer... I have no idea what i problem might be so i was wondering if anyone has any suggestions on what it could be. As soon as i remove the new barrier the game works    i have been searching the internet for fixes but have been unable to find any...

sorry for the long post (i would give you a potato but this is not 9gag)

Not related to the game/barrier. Your pc is the issue.

If the screen is black, you have to devmap into your map again then if it fails it'll kick you to the main menu.
Anyways, here's a quick tut on debugging scripts.

I know you aren't that advanced yet, but here's what you need to know from the guide:
Run the game with developer 1 and logfile 1.
Post the log here for help, if you are a technical guy you can read the full guide instead yourself but I really wouldn't recommend it.

Thanks for the replies the bug fixed its self somehow  ???  no idea why but im getting on with my map again now