Error when attempting an install.

I edited a theme to look like I wanted and am attempting to install it, but this error comes up:

Warning: file(/usr/local/ndn/web/oneclicks/wordpress/wp-content/themes/synthesis/style.css) [function.file]: failed to open stream: No such file or directory in /usr/local/ndn/web/oneclicks/wordpress/wp-includes/theme.php on line 180

Warning: implode() [function.implode]: Invalid arguments passed in /usr/local/ndn/web/oneclicks/wordpress/wp-includes/theme.php on line 180

What does it mean?

Thanks!