5 things I learned about the Sandbox folder structure.

1.Bin 32 and Bin 64 executable files including game files and Editor.
2. Game folder is important. Whole game is inside pak. files, these can be opened with WinRAR.
3. Editor folder we dont normally use.
4.SETTINGSMgr.exe - open up and make sure greenlight is on, this ensures engine detects resource compiler.
5. Tools folder- Plugins can be stored and accessed here.