[Plugin: WordPress Mobile Edition] Main Page Blank

The mobile theme seems to work fine if I view a particular post, year/month range, or a tag or category, but when I view the main page, it’s just blank (although sometimes it also just displays the non-mobile site). There’s nothing in my webserver logs that indicates a redirect problem. Any ideas what’s going wrong? I have the latest version of WP_SuperCache, but I’m wondering if that’s interfering somehow.

http://ww.wp.xz.cn/extend/plugins/wordpress-mobile-edition/