noedit:
In, pref.cs look for $Pref::Server::Quota::Environment = "####";
, I'm pretty sure that's lights, because I compared the settings in the Blockland program to pref.cs, and lights/emitters was set to 5000 in Blockland, and the environment quota was the only one set to 5000 in pref.cs.
Hope you figure it out from there.