[Plugin: Xavin's Review Ratings] Unable to show half Stars

Hi,

actually this rating-system is exactly what I needed, but unfortunately I’m not able to show up half stars. If I’d like to give a rating of 9,5 of 10, there should be 9 and a half star, but there’s only full stars shown (9 of 10). How can I fix this?

Best regards,

Nina

http://wordpress.org/extend/plugins/xavins-review-ratings/