[flexcoders] Error #1034: Type Coercion failed: cannot convert JSON Data

[keishalexie]

Hi Everyone,

I am fairly new to Flex and am doing a project using Flex 3, the
as3corelib, and a PHP file that is sending json data.  The json data
is not being displayed in my data table and what is coming through is
valid (I checked in the JSON Validator).  I really am not sure where
the problem is: the mxml, php, as3corelib, or what?  Any suggestions
and I will post code if need be.