[Plugin: W3 Total Cache] minify css

I’m trying to use the minify css part of this plug in (everything else is working great and really helping!)…

When I enable css minify, it breaks the page and using google page speed in firebug it’s telling me …

“The following requests are returning 404/410 responses. Either fix the broken links, or remove the references to the non-existent resources.”

The links it then tells me about are the minified urls for the css files – it seems as though the @includes in the minified css file are pointing at files that do not exist…

Any ideas?? Thanks, Dan

http://ww.wp.xz.cn/extend/plugins/w3-total-cache/