Error when installing patches from browser.

[Ashaman-]

Patchdashboard running on Ubuntu 14.04 Server. All packages fully up to date.

When I click either 'Install all patches not suppressed' or 'Install all patches not suppressed and reboot' Apache throws an error and nothing else happens:

PHP Notice: Undefined index: package_name in /var/www/patch_manager/plugins/main/install_all.inc.php on line 25, referer: http://patchdb.example.com/patchmgr/patches/server/exampleserver