iOS Safari - Cannot make any requests from null

Question

In attemping to get Safari on iOS 5 to load an AJAX request via jQuery, the debug console loads with the error of

Javascript: Error on Line 1
XMLHttpRequest cannot load http://<MYSERVERADDRESS>/WebMethods.asmx/Method. Cannot make any requests from null

I've tried to Google the answer, as well as search SO, but I can't find a resolution.

This issue is only present on iOS.

Any help would be greatly appreciated.

Edit

Below is the code as requested.

jQuery(function ($) {
                        $.ajax({
                            url: "/Peak.asmx/IsValidParticipant",
                            data: { LanID: $("#LoginPageUsername").val(), Password: $("#loginPagePassword").val() },
                            type: "POST",
                            success: function (data) {
                                if (data.response.result == "Success") {
                                    window.location = "/RSVP.aspx";
                                } else if (data.response.result == "Failure") {
                                    $(".errorsSummaryBox").show().find("li").hide();
                                    if (data.response.data.Reason == "Credentials") {
                                        $("#PortalAuthError").slideDown();
                                    } else if (data.response.data.Reason == "Participant") {
                                        window.location = "/NoInvite.aspx";
                                    }
                                }
                            },
                            dataType: "json"
                        });
                    });

Answer 1

I had the same problem, but I found the solution!

You have to restart the Safari process. Not only exit from the main window,but:

• exit from Safari
• double click on the exit button to show the active process
• hold on Safari
• click on minus
• restart safari

strange but true.