Problem with settings and admin panel WP Super Cache

I use WP Super Cache (last version) on 2 same sites with same plugin settings. But in one case i have problems with stats on page domain.com/wp-admin/options-general.php?page=wpsupercache&tab=contents – it not display. And one more problem – buttons “delete cache” and “delete expired cache” dont work. Cached files create in folder /wp-content/cache/supercache normally. How can i fix plugin admin panel? Reinstall did not solve the problems.