Someone else confirmed in the https://bugs.adobe.com/jira/browse/FP-209 that this is still broken in latest player. Judging by the fact that the bug has been present for *years* and level of response by Adobe, I don't expect this that will ever be fixed.
I really liked that Data Services wizard, but it's useless to me now. Adobe, please take note.
I also encounter this problem,maybe this is good idea to work around
Gregory Golberg added a comment - 05/07/10 11:36 PMSeven: like you, I can reproduce this in FB 4 and player version 10. It appears that the *only* "workaround" is to use http://code.google.com/p/as3httpclient/ (or a similar solution, basically, opening a Socket directly and talking HTTP to it yourself). That's what I am doing currently.
Thanks Orz. This is not an acceptable work around for me at this time. This is one of many issues that I've encountered when scoping out this project. We're considering switching to Silverlight for this project instead as it appears that it may be better supported/documented and fully featured for our needs.