After I downloaded "minecraft_server.1.7.10.exe" and launched it (I set it up too), I changed the world it generated with one of my worlds from my ".minecraft". I then renamed it to "world" and then launched the server. When I open multiplayer in minecraft it just says "Old" and then after about 10-15 seconds the Minecraft Server closes. when i take out my world and let it generate its own it works fine. Please Help
After having this issue:
Please attach the complete output of the "Development console" which can be found on the second tab of the launcher.
If the launcher closes after game start, please edit your profile and select "Launcher visibility" then, "Keep the launcher open".