Attract-Mode has never had an install or upgrade button or option. Attract-Mode has always been a command line install and upgrade. What you are using is a script from another provider that has gone wrong. Recent Pi firmware changes as well as Attract-Mode code changes makes recent upgrades very touchy.
My advice is to restore from backup and carefully research the correct upgrade path. If you don't have a backup (shame on you), copy off any important data using SSH and start over. If you don't have a backup or SSH enabled you can try to mount the SD card in a "live" Linux distro to get the data.