when i go to the editor and click the project it says

rebuild UE4-myproject.dill but every time it fails and says i have to manually fix the source file. i dont know what to do and have spent a month on this project and it was near completion.

You can try to save your project by copy the content folder in new project.

  • Open the launcher and make new empty project
  • Exit the new project
  • In your Launcher library found your new project and the old righ click both and Show in explorer

  • Copy only the folder Content from old project
  • Paste the folder in the new project directory

136494-a12.jpg

  • Open new project
  • Enjoy you got the copy of project that this time can launch