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Chances are you’ve been bitten by the ErrorEvent class at some point while programming AS3. It’s the asynchronous equivalent to throw an Error and it happens when, for example, a Loader‘s load fails. If you write any code that performs an asynchronous task, perhaps more file loading, you too may want a way to inform users of your class that the task has failed. Just like with Event, it’s nice to be able to add data on to the standard ErrorEvent class. How does this work? Let’s dig in and find out.

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