The following code works fine on FF but on IE has a problem ... data.hadError() is always true... why? And how can I solve that. Thanks !

function init() {
    //1: Create the DataRequest.
    var request = opensocial.newDataRequest();

    var fields = [
                    opensocial.Person.Field.HAS_APP,
                    opensocial.Person.Field.NAME,
                    opensocial.Person.Field.NICKNAME,
                    opensocial.Person.Field.PROFILE_URL];
    // add the supported fields to the parameter list.
    var params = {};
    params[opensocial.DataRequest.PeopleRequestFields.PROFILE_DETAILS] = fields;    
    
    //2: Prepare RequestItems to be added to the DataRequest
    
    // add the fetch person request to the queue.
    request.add(request.newFetchPersonRequest(opensocial.IdSpec.PersonId.VIEWER, params), "viewer");

    request.send(startResponse);
}
function startResponse(data) {
    if (data.hadError()) {
        //document.getElementById('add').style.display = "block";
        var msg = "Error Occurred<br/>You MUST refresh whole window in order to load the game, would like to do it now?";
        errorPageInit(msg);
    } else {
        var viewer = data.get("viewer");
        if (viewer.hadError()) {
            errorCode = viewer.getErrorCode();
            //errorPage(errorCode);
            if(errorCode == opensocial.ResponseItem.Error.FORBIDDEN || errorCode == opensocial.ResponseItem.Error.UNAUTHORIZED){
                document.getElementById('add').style.display = "block";
            }
        }
        else {
            // START APP
        }
    }
}

 It seems to work fine in IE8.  If you're using IE7 you'll likely need to get some debugger to attach and diagnose what's going on.  If you look into the data response and the sub-objects the error messages are usually pretty helpful