RESOLVED!

The issue had to do with HTTP cache control headers generated by the
Spring framework. These headers got past Firefox without issue, but
they caused trouble with IE.

The middle tier developer extended the SimpleFormController class in
Spring, overriding handleRequestInternal() to generate headers that
the browsers would accept.

-Jim

--- In flexcoders@yahoogroups.com, "dadrobson" <jim.robson@...> wrote:
>
> I have a complete app that is currently working fine when loaded in
> Firefox. However, in IE, some (but not all) HTTPService requests
> return the following error:
>
> Error: [IOErrorEvent type="ioError" bubbles=false cancelable=false
> evenPhase=2 text="Error #2032: Stream Error. URL:
> http://localhost/pw/modifyProject.xml"] URL:
> http://localhost/pw/modifyProject.xml
>
> As you can see from the URL, I'm just running it on my own development
> machine. All URLs point to Localhost, so there shouldn't be any need
> for a crossdomain.xml file.
>
> Why is this happening on IE but not Firefox? What could cause this
> error (besides the cross-domain policy issue)?
>