Getting warnings after upgrading

Upgraded WP and all plugins to the latest. Getting this after when editing a post, in the header:

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 74 and defined in /[…]/public_html/wp-includes/wp-db.php on line 990

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 81 and defined in /[…]/public_html/wp-includes/wp-db.php on line 990

When publishing, a blank page with this shows:

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 74 and defined in /[…]/wp-includes/wp-db.php on line 990

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 81 and defined in /home3/escaso/public_html/wp-includes/wp-db.php on line 990

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 74 and defined in /[…]/wp-includes/wp-db.php on line 990

Warning: Missing argument 2 for wpdb::prepare(), called in /[…]/wp-content/plugins/no-future-posts/no-future-posts.php on line 81 and defined in /[…]/wp-includes/wp-db.php on line 990

Warning: Cannot modify header information – headers already sent by (output started at /[…]/wp-includes/wp-db.php:990) in /[…]/wp-includes/pluggable.php on line 876

http://wordpress.org/extend/plugins/no-future-posts/