Gaming [HELP] "Exception not managed in the application."

[Insidee]

Hello to all. I have a problem with an application concerning the game "Animal Crossing New Leaf": ACNL Chat Sender. I have all the steps, but when I try to send the message it tells me that there is an exception not managed in the application. Does anyone know how to help me ?? (image in the spoiler) THANKS IN ADVANCE

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[ch00se_username]

tried testing the connection?