Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
  at Rawr.ComparisonGraph.get_PrerenderedGraph () [0x00000] 
  at Rawr.ComparisonGraph.ComparisonGraph_Resize (System.Object sender, System.EventArgs e) [0x00000] 
  at System.Windows.Forms.Control.OnResize (System.EventArgs e) [0x00000] 
  at System.Windows.Forms.UserControl.OnResize (System.EventArgs e) [0x00000] 
  at System.Windows.Forms.Control.OnSizeChanged (System.EventArgs e) [0x00000] 
  at System.Windows.Forms.Control.UpdateBounds (Int32 x, Int32 y, Int32 width, Int32 height, Int32 clientWidth, Int32 clientHeight) [0x00000] 
  at System.Windows.Forms.Control.UpdateBounds (Int32 x, Int32 y, Int32 width, Int32 height) [0x00000] 
  at System.Windows.Forms.Control.SetBoundsCore (Int32 x, Int32 y, Int32 width, Int32 height, BoundsSpecified specified) [0x00000] 
  at System.Windows.Forms.Control.SetBounds (Int32 x, Int32 y, Int32 width, Int32 height, BoundsSpecified specified) [0x00000] 
  at System.Windows.Forms.Control.ScaleControl (SizeF factor, BoundsSpecified specified) [0x00000] 
  at System.Windows.Forms.ScrollableControl.ScaleControl (SizeF factor, BoundsSpecified specified) [0x00000] 
  at System.Windows.Forms.Control.Scale (SizeF factor) [0x00000] 
  at System.Windows.Forms.ContainerControl.PerformAutoScale () [0x00000] 
  at System.Windows.Forms.ContainerControl.PerformDelayedAutoScale () [0x00000] 
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.ContainerControl:PerformDelayedAutoScale ()
  at System.Windows.Forms.Control.ResumeLayout (Boolean performLayout) [0x00000] 
  at Rawr.ComparisonGraph.InitializeComponent () [0x00000] 
  at Rawr.ComparisonGraph..ctor () [0x00000] 
  at (wrapper remoting-invoke-with-check) Rawr.ComparisonGraph:.ctor ()
  at Rawr.ItemComparison.InitializeComponent () [0x00000] 
  at Rawr.ItemComparison..ctor () [0x00000] 
  at (wrapper remoting-invoke-with-check) Rawr.ItemComparison:.ctor ()
  at Rawr.FormMain.InitializeComponent () [0x00000] 
  at Rawr.FormMain..ctor () [0x00000] 
  at (wrapper remoting-invoke-with-check) Rawr.FormMain:.ctor ()
  at Rawr.Program.Main () [0x00000]

Rawr encountered an error getting Character from Armory: Zamir@EU-Emerald Dream. Please check to make sure you've spelled the character name and realm exactly right, and chosen the correct Region. Rawr received no response to its query for character data, so if the character name/region/realm are correct, please check to make sure that no firewall or proxy software is blocking Rawr. If you  still encounter this error...
 
Response: null
Object reference not set to an instance of an object.
at Rawr.Armory.GetCharacter(CharacterRegion region, String realm, String name)

function CombatRatings(playerLevel) {

// see http://www.wowwiki.com/Combat_Rating_System

    this.playerLevel = playerLevel;
    this.baseValues = {
        criticalstrike      : 14
      , spellcriticalstrike : 14
      , hit                 : 10
      , spellhit            : 8
      , haste               : 10
      , spellhaste          : 10
      , expertise           : 2.5
      , defense             : 1.5
      , dodge               : 12
      , parry               : 15
      , block               : 5
      , resilience          : 25
    };
    
    
    this.RatingToPercent = function(stat, rating) {
        return rating / this.PercentToRating(stat, 1);
    }
    
    this.PercentToRating = function(stat, percent) {
        var base = this.baseValues[stat];

        switch (true) {
            case this.playerLevel <= 10:
                return percent * (base / 26);
                
            case this.playerLevel <= 60:
                return percent * (base * ((this.playerLevel - 8) / 52));
                
            case this.playerLevel <= 70:
                return percent * (base * (82 / (262 - (3 * this.playerLevel))));
                
            default:
                return percent * (base * ((this.playerLevel + 12) / 52));
        }
    }
}