Error with Array/ArrayCollections and Legacy Mode

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Update Fluorine o recent SVN Trunk (Rev.209)
2. Make call to service that returns a List
3. Flash, Legacy is returning ArrayCollection
4. ArgumentError: Error #2173: Unable to read object in stream.  The class 
flex.messaging.io.ArrayCollection does not implement 
flash.utils.IExternalizable but is aliased to an externalizable class.

What is the expected output? What do you see instead?
Response for Legacy endpoints should return Array, and Non-Legacy Endpoints 
should return ArrayCollections based on XML config value as 

What version of the product are you using? On what operating system?
SVN Seems to be happening to the earliest version in the current REPO

Please provide any additional information below.

This issue is not happening in version 1.0.15, that comes apart of the 
installation setup.

Original issue reported on code.google.com by Huo...@gmail.com on 22 Nov 2010 at 7:31