First of all, Zapk's City RPG is giving you quite a few errors, I would recommend getting rid of them before Blockland starts doing even more wonky things
I'm not sure what Script_rtbInGame does, but you can already access the RTB overlay in-game.
On the networking side of things I would check your firewall and make sure Blockland is allowed for both private AND public networks, you might even wanna try temporarily disabling your main anti-virus or any programs like zone alarm, as they can block connections to server hosted by VPN's such as Boss Battles and Tez's servers
If you don't mind me asking, what OS are you running? I see your running Enterprise Edition of the Vista Kernel; but this could be Vista, 7, 8, or even 10