Loaded up new jQuery 1.4 and now sucess callbacks don't work

Loaded up new jQuery 1.4 and now sucess callbacks don't work

Hey guys, really excited about the new 1.4 release.  Looks like a lot of good stuff.  Anyway, I've been using the json format to pass data back from the server and after upgrading to 1.4 I'm getting the parsererror, even when I simplify my response to something like:


{
"test": [{"value": "New", "onclick": "blah"}]

}

In php I've been using:

header('Content-type: application/json');

to set the header.


Any help would be appreciated. Guess I'm stuck using the older version
until I find a solution.