@up So... why are you posting these "things" with absolutely no value? Is it so hard to help and give him a path to "logs or something"?
@SimuGames03 First, try to use FDL's method. It is a really common solution to this problem. If it won't work, try to find newest log file in:
C:\Users\<yetheplayer>\Documents\OnRailTeam\Launcher\Logs
You can post it using attachments or pasting it in [ code] tags.