Why is this String.Split() giving a object reference not set error?

this is giving a Null reference exception: object reference not set to an instance of an object but i cant figure out why, the error is near the end where it declares variable line2 as an array of line.split

 #pragma strict
 import System.IO;
 var names = new Array ();
 var platforms = new Array ();
 var genres = new Array ();
 var styles = new Array ();
 var clients = new Array ();
 var gamePanel : GameObject;
 var gamePane : GameObject;
 var test : boolean;
 var line = "";
 
 function loadGameList ()
 {
     var sr : StreamReader = new System.IO.StreamReader(Application.dataPath + "/" + "games.list");
     var found = false;
     for(var i = 0; i < 15 || found == false; i++)
     {
         line = sr.ReadLine();
         if(line == "#")
         {
             found = true;
         }
         else
         {
             var line2 = line.Split(","[0]);  //this line is giving the error <----------
             addNewGame(line2[0],parseInt(line2[1]),parseInt(line2[2]),parseInt(line2[3]),parseInt(line2[4]));
         }
     }
     addGameList();
     sr.Close();
 }

i dont see anything wrong about var line2 = line.Split(","[0]);

so i really dont understand why its giving a null reference error