Unable to save WP Carousel

Hi,

I’m getting the followiing error, and am unable to save the menu?

Message: ‘window.document.forms.post_wordpress.type_list’ is null or not an object
Line: 12
Char: 2
Code: 0
URI: http://dev.mydomain.com/wp-content/plugins/wp-carousel/js/edit.carousel.dropdown.hide.divs.js.js?ver=3.0.1

http://ww.wp.xz.cn/extend/plugins/wp-carousel/