DrugWars exception

2014-01-24 02:53:14 - STARTING SCRIPTS...
2014-01-24 02:53:14 -  ...successfully started script 'DrugWars.Main'!
2014-01-24 02:56:27 - Error during Tick in script 'DrugWars.Main':
                      System.NullReferenceException: Object reference not set to an instance of an object.
                         at DrugWars.Main.jumpTimer_Tick(Object sender, EventArgs e)
                         at GTA.Timer.EachTick(Object sender, EventArgs e)
                         at System.EventHandler.Invoke(Object sender, EventArgs e)
                         at GTA.Script.DoTick()
                         at GTA.ScriptThread.OnTick()
2014-01-24 03:10:37 - Direct3D device lost!
2014-01-24 03:10:38 - Direct3D device created!
2014-01-24 03:11:11 - Direct3D device lost!
2014-01-24 03:11:12 - Direct3D device created!