script runtime error, but works

hi, a have this situation in my console log:

Code:

---

        ******* script runtime error *******
        cannot cast undefined to bool:  (file 'maps/mp/gametypes/_name.gsc', line 120)
          if(isSubStr(self.name, "^1^2")) 
 *
          started from:
                            self waittill("menuresponse", menu, response);

---

server is running ok, script seems to work, is a "name protect" for admin openscr.. commands. but every time this message appear in console log, someone can help me?

Can't give you solid advice as you haven't posted any code (Read stickies before posting) but you can try placing;

if(!isDefined(self.name)) return;

Before

if(isSubStr(self.name, "^1^2"))

Might be the "disconnect" response that is messing with you. After a player disconnects you'd have no player but the script has triggered the waittill.