Message in Spanish (Español)
AsyncCallback se invocó con un IAsyncResult que se marcó 'IsCompleted = false'. No debe invocarse la devolución de llamada hasta que se haya completado la operación asincrónica.
Unlocalized message
AsyncCallback was invoked with an IAsyncResult which was marked 'IsCompleted = false'. The callback must not be invoked until the asynchronous operation has completed.
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