My bad just change it to prontera. The error is fine, it is normal as they said.
- script EMPSPAWN -1,{
OnInit:
killmonster "prontera",strnpcinfo(0)+"::OnInit";
monster "prontera",156,149,"Emperium Test Breaker",1288,1,strnpcinfo(0)+"::OnInit";
monster "prontera",156,143,"Emperium Test Breaker",1288,1,strnpcinfo(0)+"::OnInit";
monster "prontera",156,137,"Emperium Test Breaker",1288,1,strnpcinfo(0)+"::OnInit";
end;
}