Problem bypassed. I closed the upgrade window. Ran a partial upgrade, which led to the same error.
Closed the upgrade window again and made a smooth reboot. After booting, I enabled some ppa's which led to a partial upgrade. Prior to run it, I removed blueman. All went fine and I reinstalled blueman again.
Problem bypassed. I closed the upgrade window. Ran a partial upgrade, which led to the same error.
Closed the upgrade window again and made a smooth reboot. After booting, I enabled some ppa's which led to a partial upgrade. Prior to run it, I removed blueman. All went fine and I reinstalled blueman again.