Same issue here on 14.04 without upgrade to 14.10. Installed and removed unetbootin. Then apt-get autoremove failed to remove syslinux-themes-debian with exit status 127 from the post-removal script.
Same issue here on 14.04 without upgrade to 14.10. themes- debian with exit status 127 from the post-removal script.
Installed and removed unetbootin. Then apt-get autoremove failed to remove syslinux-