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anthony@anthony-VPCZ12V9E:~$ okular
Object::connect: No such signal org::freedesktop::UPower::DeviceAdded(QDBusObjectPath)
Object::connect: No such signal org::freedesktop::UPower::DeviceRemoved(QDBusObjectPath)
okular(11419): couldn't create slave: "Unable to create io-slave:
klauncher said: Error loading 'kio_trash'.
"
okular(11419): couldn't create slave: "Unable to create io-slave:
klauncher said: Error loading 'kio_file'.
"
okular(11419): couldn't create slave: "Unable to create io-slave:
klauncher said: Error loading 'kio_file'.

I have recently upgraded Okular on my Ubuntu 14.04 machine. I get the

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couldn't create slave: "Unable to create io-slave:
klauncher said: Error loading 'kio_file'.

when I try to open a pdf using file>open, or if I directly open a pdf i get it when I try to save as.