Thanks Brian,
dpkg --configure --pending
Will try to automatically configure all pending packages.
Trying this resulted in: Setting up virtualbox (4.3.18-dfsg-1) ... insserv: script virtualbox: service vboxdrv already provided! insserv: exiting now! update-rc.d: error: insserv rejected the script header dpkg: error processing package virtualbox (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of virtualbox-dkms: virtualbox-dkms depends on virtualbox (>= 4.3.18-dfsg-1); however: Package virtualbox is not configured yet. Package virtualbox-4.1 which provides virtualbox is not installed. dpkg: error processing package virtualbox-dkms (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of virtualbox-qt: virtualbox-qt depends on virtualbox (= 4.3.18-dfsg-1); however: Package virtualbox is not configured yet. Package virtualbox-4.1 which provides virtualbox is not installed. dpkg: error processing package virtualbox-qt (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: virtualbox virtualbox-dkms virtualbox-qt so it looks like I will need to purge everything as you said and reinstall Bob