After opening CSS directly by your browser, do super-reloading (Ctrl+F5).
The mod_rewrite codes may remain in your .htaccess. Please delete these lines in your .htaccess:
RewriteEngine on
RewriteRule ^(.*)\.css$ /path-to-wp/wp-content/plugins/script-compressor/jscsscomp.php?q=$1.css [NC,L]




