System.InvalidOperationException: Begin cannot be called again until End has been successfully called.
   at Microsoft.Xna.Framework.Graphics.SpriteBatch.Begin(SpriteBlendMode blendMode, SpriteSortMode sortMode, SaveStateMode stateMode, Matrix transformMatrix)
   at Microsoft.Xna.Framework.Graphics.SpriteBatch.Begin(SpriteBlendMode blendMode, SpriteSortMode sortMode, SaveStateMode stateMode)
   at #Lm.#sp.#8Fb(Boolean )
   at #Lm.#sp.#Ms()
   at #Vl.#Yo.#0tb()
   at #5i.#4i.#Ms()
   at #rb.#xb.#Ms()
   at #1h.#0h.#Ms()
   at #rb.#xb.#7s()
   at #rb.#xb.#it(Object , EventArgs )
   at #rb.#Bb.#Dt()
   at #rb.#Rb.#Sv(Object , EventArgs )
   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(Int32 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 #rb.#Rb.#ot()
   at #rb.#xb.#ot()
   at #1h.#np.#Iwb(String , Boolean )