UE4 Failed to open. PLEASE HELP ASAP!

Hi, Usnia

I’m really sorry for the happening.
If I were you I would do this:

  1. First, backup your project and it’s dependencies
  2. Reinstall UE4
  3. Then create a new project
  4. Manually copy & paste your stuff into the folder (default on windows 7 is C:/Users/your user/Documents/Unreal Projects/your project)
    , UE4 will automatically display them for you (this will work, happened to me that i had to manually place things into my project).

Before doing these steps backup everything, I don’t want you to lose all your work.

I hope this helps

Nyul