Has anyone used the wordpress plugin w3-total-cache on a Dreamhost VPS successfully? [closed]

Question

I was encouraged by Dreamhost to go with FCGI, XCache and w3 total cache. But I'm not sure what the optimal settings are, especially re: the Object and Database cache. Any suggestions?

Also, I can't get this error message to go away: Recently an error occurred while creating the CSS / JS minify cache Nor can I get log files to show up...