Use ppa-purge with each ppa installed, to downgrade to genuine version. Then clean the system via 'gtkorphan' & 'bleachbit' (as root, carefully select options) and reboot. Next the upgrade script should be happier.
Use ppa-purge with each ppa installed, to downgrade to genuine version. Then clean the system via 'gtkorphan' & 'bleachbit' (as root, carefully select options) and reboot.
Next the upgrade script should be happier.