After upgrade from FB4Beta to FB4, web services no longer returning the same data types.

Question

I just upgraded from FB4 beta to the FB4 release. I'm still running the Flex 3.5 SDK and amnow  unable to use a lot of my web services. In the previous FB4 beta, I could generate the proxy classes from the WSDL and would get a ResultEvent that containted either my complex data type or an ArrayCollection of those complex data types.
After I deleted and regenerated the services under the FB4 release, I get a ProxyObject or an ArrayCollection of ProxyObjects. No matter what I try I cannot map those ProxyObjects to my complex data type and it's driving me nuts! The oddest thing is that it didn't break all of my services, just some of them.
I've tried several methods of mapping the ProxyObject to my custom data type but I get a null result every time and no errors.
private function getContactsResult_handleResult(event:ResultEvent):void
    this._contactsList.removeAll();
    if (event.result is ArrayCollection)
        for each (var contact:ContactType in event.result)
            _contactsList.addItem(contact);                   
    if (event.result is ContactType)
        _contactsList.addItem(event.result as ContactType);
Any suggestions?

Answer 1

It looks like this was a combination of the upgrade,
increasing use of ASP files and not having seperate application
pools in IIS.
We've just starting edding aspx apps, previously we only had
one asp app so we only used the default app;icaton pool in iis.
With the errors in the virtual directory started, we deleted and
remade the VD with it's only application pool. That appears to have
resolved the issues. The only concern I have is one of the VD did
have it's own applicaton pool and still had the very slow response
after the upgrade. But I'll see how this solution works for the
future.
The decesion was made to only have cf8 installed since that
worked well on our testing server, so we did intend to overwrite
the CFIDE folder.
Thanks for checking this out and for your time on this.
At this point I consider this closed. If something else comes
up I'll start a new thread on it.