I transferred my blog Hostgator 2 days ago and since then WP-Super Cache gives me this error when using it in "Use mod_rewrite to serve cache files." mode upon pressing the "Test Cache" button.
Fetching http://www.virtualpreacher.org/ to prime cache: OK
Fetching first copy of http://www.virtualpreacher.org/: FAILED
Fetching second copy of http://www.virtualpreacher.org/: FAILED
One or more page requests failed:
Couldn't resolve host 'www.virtualpreacher.org'
Fatal error: Cannot use object of type WP_Error as array in /home/virtudwt/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 977