******* script runtime error *******
assert fail: Did not find a node!!! [Should not see this!]: (file 'maps/_zombiemode_spawner.gsc', line 422)
 AssertEx( IsDefined( node ), "Did not find a node!!! [Should not see this!]" );
 *
Error: called from:
(file 'maps/_zombiemode_spawner.gsc', line 128)
 self thread zombie_think(); 
             *
Error: called from:
(file 'maps/_spawner.gsc', line 1024)
   thread [[ func[ "function" ] ]]();
                 *
Error: called from:
(file 'maps/_spawner.gsc', line 985)
 thread run_spawn_functions();
        *
Error: called from:
(file 'maps/_spawner.gsc', line 965)
   spawn thread spawn_think( self.targetname ); 
                *
Error: started from:
(file 'maps/_spawner.gsc', line 935)
  self waittill( "spawned", spawn ); 
       *