Filter error in IE9

I'm using nopcommerce 1.60, and notice a bug recently, it's happened when I use filter in product list page and the attribute name is Chinese. After I clicked a Attribute to filter products, the products were filtered with no problem. But in the filtered page, the link of "Remove Filter" became a link with trash charactors(for example: http://nopcommercel.com/category/56-.aspx?ã¥â®â€°ã¨â£â€¦ã¦â€“â¹ã¥â¼â=13). And the link doesn't work. While this works in other browsers like chrome, firefox and IE6(other browsers not tested).

Try the latest version of nopCommerce (1.90). This issue was fixed soem time ago

Thanks for your quick response!

I'm using a customized version of 1.60, I can not switch to 1.90 easily. But by comparing the ProductSpecificationFilter.ascx.cs between 1.60 and 1.90, I found there's a line missing in 1.60:

line 68: url = CommonHelper.RemoveQueryString(url, qsp);

after adding the line to 1.60 file, the bug fixed!

Hope this helps others having same problem.