Not starting when port 4000 in use

[yefoenix]

I am useing the jar of v2.4.1，and made the file before starting.

[setup]
serverName = myserver
theme = dark
port = 8200
enableFog = true

but the app still exited with Error message:

---

APPLICATION FAILED TO START

---

Description:

Web server failed to start. Port 4000 was already in use.

Action:

Identify and stop the process that's listening on port 4000 or configure this application to listen on another port.

[AntonyLeons]

you are correct, it needs port 4000 for launch then switches to the specified port, will try to fix asap.