It all starts up normally, but will never appear in the server list.
I am using dedicated.bat and not dedicatedLAN.bat.
I checked the console log, and it seems that my dedicated server cannot authenticate for some reason.
Add-ons I'm running that are not default:
RTB v4
Shotgun
Fill can
Duplicator
Color picker
SetPlayerLight event
ChangePlayerLight event
I reinstalled a clean version of Blockland over the files I have, meaning all proper base files are present.
I can start a non-dedicated server and have it appear on the list.