[5/30/2012 4:34:28 PM]:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentNullException: This method does not accept null for this parameter.
Parameter name: texture
   at Microsoft.Xna.Framework.Graphics.SpriteBatch.InternalDraw(Texture2D texture, Vector4& destination, Boolean scaleDestination, Nullable`1& sourceRectangle, Color color, Single rotation, Vector2& origin, SpriteEffects effects, Single depth)
   at Microsoft.Xna.Framework.Graphics.SpriteBatch.Draw(Texture2D texture, Vector2 position, Nullable`1 sourceRectangle, Color color, Single rotation, Vector2 origin, Single scale, SpriteEffects effects, Single layerDepth)
   at Terraria.Main.DrawWalls()
   at Terraria.Main.RenderWalls()
   at Terraria.Main.Draw(GameTime gameTime)
   at Microsoft.Xna.Framework.Game.DrawFrame()
   at Microsoft.Xna.Framework.Game.Tick()
   at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)
   at Microsoft.Xna.Framework.GameHost.OnIdle()
   at Microsoft.Xna.Framework.WindowsGameHost.RunOneFrame()
   at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e)
   at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at Microsoft.Xna.Framework.WindowsGameHost.Run()
   at Microsoft.Xna.Framework.Game.RunGame(Boolean useBlockingRun)
   at Microsoft.Xna.Framework.Game.Run()
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at TerrariAPI.Hooking.Wrapper.Invoke(String method, Object[] parameters)
   at TerrariAPI.Hooking.Main.Run()
   at TerrariAPI.Hooking.Hooks.Start()
   at TerrariAPI.Program.Main(String[] args)