On loading module got JS error in jquery validator -

i using jquery form validation library

and need validate file input that. code follows:

    $.validate({          form : '#form',          modules : 'file',          validateonblur : false,          bordercoloronerror : 'red',          inputparentclassonerror : 'error',          scrolltotoponerror: false,          errormessageclass: 'text-error',            onerror : function() {            },          onsuccess: function($form) {              // input button disabled if form contains backend validations              $form.find('input[type="submit"]').unbind('click');              return true;          }      });

the problem when try load module file gives me js error

typeerror: a.formutils undefined" in file.js

i unable find out problem is.

any highly appreciated! thankyou.