jquery - Uncaught TypeError: Object [object Object] has no method 'iosSlider' -

looking experts help... our site using iosslider (https://iosscripts.com/iosslider/) mobile slider... however, in chrome inspector following error

uncaught typeerror: object [object object] has no method 'iosslider' 

i've checked, , jquery loaded once in head before calling iosslider js... is:

$(document).ready(function() {      /* custom settings */     $('.iosslider').iosslider({         desktopclickdrag: true,         snaptochildren: true,         infiniteslider: true,         navslideselector: '.slidercontainer .slideselectors .item',         scrollbar: true,         scrollbarcontainer: '.slidercontainer .scrollbarcontainer',         scrollbarmargin: '0',         scrollbarborderradius: '0',         keyboardcontrols: true     });  }); 

also tried

$(document).ready(function() {      /* custom settings */    jquery('.iosslider').iosslider({         desktopclickdrag: true,         snaptochildren: true,         infiniteslider: true,         navslideselector: '.slidercontainer .slideselectors .item',         scrollbar: true,         scrollbarcontainer: '.slidercontainer .scrollbarcontainer',         scrollbarmargin: '0',         scrollbarborderradius: '0',         keyboardcontrols: true     });  }); 

to no avail though.. help?

---

update: how we're calling library:

 <script src="js/vendor/modernizr-2.6.2.min.js"></script>         <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.js" type="text/javascript"></script>         <script src="js/bootstrap.min.js"></script>         <script src="js/jquery.mobile.custom.min.js"></script>         <script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.0.4/js/bootstrap-collapse.js"></script>         <script src="//twitter.github.io/bootstrap/assets/js/bootstrap-carousel.js"></script>         <script src="/js/jquery.iosslider.min.js"></script>         <script src="js/corecalls.js"></script> 

the iosslider function called within corecall.js

it seems iosslider plugin not included. should included afer jquery , before jquery('.iosslider').iosslider({ call