provides developers with special editions of the Flash runtimes
to assist debugging efforts. You obtain a copy of the debugger version
of Flash Player when you install Adobe Flash Professional or Adobe
Flash Builder. You also obtain a utility for the debugging of Adobe
AIR applications, which is called ADL, when you install either of
those tools, or as part of the Adobe AIR SDK.
There is a notable difference in how the debugger versions and
the release versions of Flash Player and Adobe AIR indicate errors.
The debugger versions shows the error type (such as a generic Error,
IOError, or EOFError), error number, and a human-readable error
message. The release versions shows only the error type and error
number. For example, consider the following code:
tf.text = myByteArray.readBoolean();
tf.text = error.toString();
If the readBoolean() method throws an EOFError
in the debugger version of Flash Player, the following message displays
in the tf text field: “EOFError: Error #2030: End
of file was encountered.”
The same code in a release version of Flash Player or Adobe AIR
would display the following text: “EOFError: Error #2030.”
debugger players broadcast an event named "allComplete"; avoid creating
custom events with the name “allComplete”. Otherwise, you will encounter unpredictable
behavior when debugging.
To keep resources and size to a minimum in the release versions,
error message strings are not present. You can look up the error
number in the documentation (the appendixes of the ActionScript 3.0 Reference for the Adobe
Flash Platform) to correlate to an error message. Alternatively,
you can reproduce the error using the debugger versions of Flash
Player and AIR to see the full message.