I have updated to WordPress 3.0 and have the latest development build of W3TC.
With CSS Minify enabled the CSS is not found when displaying the site. I am using the Thesis 1.7 theme and have these 3 CSS items in the minify list:
wordpress/wp-content/themes/thesis_17/style.css wordpress/wp-content/themes/thesis_17/custom/layout.css wordpress/wp-content/themes/thesis_17/custom/custom.css
All these files exist and are shown OK when clicking on the "Verify URI" buttons.
The generated HTML has a link to the following generated CSS include file
http://mydomain.com/wordpress/wp-content/w3tc/min/thesis_17/thesis_17/default.include.0.css. This fails with a
HTTP/1.0 400 Bad Request error as this file does not exist.
That directory only contains a single file named
default.include.css.id, of length 1 byte that contains ASCII "0".
I am not using the multisite option in WordPress 3.0.
The CSS minify settings were working OK with WordPress 2.9.2 before the update to 3.0.
Thanks and best regards,