未将对象引用设置到对象的实例

ft3739763

求助啊~~每次打开都这样，我什么 DX  啊ANX啊  什么3.5都装了啊 求助

Version: 1.3.5.3
Thread: RenderThread
System.NullReferenceException: 未将对象引用设置到对象的实例。
   在 Magicka.Audio.AudioManager.Dispose()
   在 Magicka.Game.UnloadContent()
   在 Microsoft.Xna.Framework.Game.DeviceDisposing(Object sender, EventArgs e)
   在 Microsoft.Xna.Framework.GraphicsDeviceManager.OnDeviceDisposing(Object sender, EventArgs args)
   在 Microsoft.Xna.Framework.GraphicsDeviceManager.HandleDisposing(Object sender, EventArgs e)
   在 Microsoft.Xna.Framework.Graphics.GraphicsDevice.~GraphicsDevice()
   在 Microsoft.Xna.Framework.Graphics.GraphicsDevice.Dispose(Boolean )
   在 Microsoft.Xna.Framework.Graphics.GraphicsDevice.Dispose()
   在 Microsoft.Xna.Framework.GraphicsDeviceManager.Dispose(Boolean disposing)
   在 Microsoft.Xna.Framework.GraphicsDeviceManager.System.IDisposable.Dispose()
   在 Microsoft.Xna.Framework.Game.Dispose(Boolean disposing)
   在 Microsoft.Xna.Framework.Game.Dispose()
   在 Magicka.Program.Main(String[] args)