in your norton internet security go to personal firewall and click configure in the next window choose networking and in the trusted section select ADD and in the next box type 127.0.0.1 and then press OK, This should allow the gate which is being blocked start in your m2server..
BTW it isnt the m2server thats being blocked it is either gamegate or logingate one of the 2 i cant rightly remember but in norton it says its a backdoor trojan and blocks it even if you say allow when you start the gates....
as for the NPC failures thats due in part to the fact that the text in those files isnt english and its being read wrong i think it has something to do with the chinese language pack not being installed or activated in you reagion/languages on the control panel or added to the list on the languages bar on the task bar at the right of your screen at the bottom..
cant think of the reason why you cant get the gamemaster char at selchar screen to appear when you start the client id guess its hum or the sechar gate