While in Flash Builder I am able to read an external xml file for data, loaded into a data grid.
Although after I build into a temp directory outside of the Working Space my swf is no longer reading the xml data file.
Works fine if I execute from within the Work Space.
And yes, the XML file is being included in the build.
Must be a setting somewhere but I don't know what it might be.
I seem to have found my own answer.
It was a Flash Player/Builder security issue.
Went to C:\Documents and Settings\jwh\Application Data\Macromedia\Flash Player\#Security\FlashPlayerTrust
and added my temp dir to flashbuilder.cfg.
Life appears to be good again.