callback.apply is not a function during .load

[anonymous]

I am getting the following error in firebug after upgrading to JQuery 1.1 from 1.0.4:

callback.apply is not a function

This is happening during a .load call. It worked fine in 1.0.4.

Code which is causing the error:

$("#SCENARIO_div").load("Run_Parameter_Query.jsp", {param: "SCENARIO", field_type: "dropdown", YEAR:

$('#YEAR').val()}, function() {

$("#SCENARIO_li").highlightFade();

$("#SCENARIO").change(function() {

clear_error("SCENARIO");

$(this).attr("disabled", "true");

$(this).removeAttr("disabled");

$("#SCENARIO").removeOption("SCENARIO_select");

});});

[anonymous]

It appears none of the parameters are getting posted to the URL