Just got this problem today and never had to deal with anything like that before. But it basically is just what other people have already said. Osu! crashes when trying to retry a map several times and this has only happened in Taiko for me.
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 )