Looks like that's not a complete addons list. Anyway...
Disable any of space-guy's addons. (They probably aren't causing the problem, but the space tick spams the console when you turn trace on)
Start a server.
Place a brick and event it to Onactivate>Client>CenterPrint>"Hello!"
Open the console, type:
trace(1);
Close the console.
Activate the brick.
Open the console, type;
trace(0);
Exit Blockland.
Post the console log.