I have the same issue. I’m on WP 3.9.2.
The plugins suddenely disappeared from the dashboard en menus. I still have the correct role (admin and backup admin) as per database
a:2:{s:13:"administrator";b:1;s:14:"backwpup_admin";b:1;}
The plugin is installed on the filesystem but doesn’t showup in the plugin section. Reinstall fails because directory already exists. Who can help?
Can i have a look to you ssystem? mail me at d dot huesken at inpsyde dot com
Result: CloudFlair must setup so the wp-cron.php will not be cached!
I renamed previous install directory. Downloaded and unzipped 3.1.4 in plugins directory and activated in admin area.
Now I have got the admin panel back. Jobs are still there and I could run a job without problems. Thanks!