[Plugin: Polldaddy Polls & Ratings] cannot upload images in wordpress

Hi, I like this and am trying to convince my client to use it, but I can’t upload images through the wordpress interface. If I do it through the web interface, it works fine, but it gets stuck and I get a spinning wheel on the screen when I try to upload an image next to the poll answer. Help. 🙂

http://ww.wp.xz.cn/extend/plugins/polldaddy/