Ajax via RSP/CGIDEV2

All:

I'm giving Ajax a try and after a bit of effort, everything is working,
except that I'm not getting either the responseText or responseXML back from
the server.  My CGI program is executing (I can walk through it using debug)
and I can see the XML document being created and written to the browser via
QtmhWrStout.  My call-back function is being called, but both the
responseText and responseXML are null.

The CGI program is created using RSP (RPG Server Pages) and it calls CGIDEV2
procedures to build the XML file (since CGIDEV2 has such nice features for
this purpose).  I've even tried simply using a test RSP program to create
the XML.  If I simply execute the test program outside of the Ajax Request,
the XML document displays in the browser.  If I then call it via the Ajax
Request, the test program executes, but neither responseText nor responseXML
is returned.

I know an XML document is being created because if we use WrtHtmlToStmf, we
can get a file on the IFS and it looks just the way we want.  If we change
to WrtSection('*fini'), nothing is returned.

I'm wondering:
- is there an Apache directive that needs to be set/changed?
- is there a possibility of authority issues?

Has anyone else run into this?  Any thoughts?

Thanks in advance,
--Bruce Guetzkow