Sorting has stopped working

The admin interface has stopped “working” after the site was uploaded to my client’s server. It worked just fine when I tested it locally. Basically, I cannot sort posts by drag and drop anymore nor can I add new posts.

I’ve tried a few different things, the sorting works in IE, and on other websites that I manage (both IE and Chrome). It doesn’t work for this particular domain in Chrome.

Any help would be great!

Thanks!

http://wordpress.org/extend/plugins/advanced-custom-sort/