[Plugin: NextGEN Gallery] Help! Images not uploading!

Hi there,
I recently uploaded a few galleries to http://www.blazingsaddle.ca and they went fine, as you can see but as of today the plugin won’t let me upload images. I can add new galleries just fine but when I go to add images, select the image and the gallery to upload to and then click the “Upload” button it does absolutely nothing. No error, no response. Have tried it in two different users with no luck. Please help!

http://ww.wp.xz.cn/extend/plugins/nextgen-gallery/