JSON Response not Rendering in XML or Outline

More often than not, my JSON responses are not rendered into XML or Outline for viewing / generating assertions / transferring properties (see below request / response). Why is this? It is important to me, because I need to transfer properties from this response to several later executed test steps after this step. Below is the request / response and several screen captures.

Here's the raw for both request and response:

POST http://mywebservice/auth/login/api?ft=json&username=automation-username&password=automation-password&lang=en HTTP/1.1
Accept-Encoding: gzip,deflate
Accept: application/json
Content-Type: application/x-www-form-urlencoded
User-Agent: Jakarta Commons-HttpClient/3.1
Host: mywebservice
Content-Length: 0



HTTP/1.0 200 OK
Date: Tue, 13 Jul 2010 23:04:46 GMT
Server: Apache/2.2.12 (Ubuntu)
Vary: Accept-Language,Cookie
Content-Language: en
Content-Type: application/json
Set-Cookie: sessionid=5d4a588baaaaf9bb11aa78a04e224a54; expires=Tue, 27-Jul-2010 23:04:46 GMT; Max-Age=1209600; Path=/
Via: 1.0 mywebservice
X-Cache: MISS from myhomemachine.home
X-Cache-Lookup: MISS from myhomemachine.home:3128
Connection: close

{"username": "automation-username", "warning": {"3600": "Could not update user"}, "last_login": "You last logged in on 7/13/10 5:04 PM", "session_id": "5d4a588baaaaf9bb11aa78a04e224a54"}

I am using soapUI-Pro-3.5.1 on Mac OSX 10.6.4 (hence all the tabs' text looking horrible)

Here is the response from the JSON tab:


Here is the response from the Outline tab:


Here is the response from the XML tab:


Thanks in advance!!