In a fresh install a month ago I ran into several problems when trying to install eddie with dpkg. It kept complaining about gksu and libmono*. Couldn't make it work installing those packages manually because would ran into different issues.
The solution was rather simple, visit: https://docs.kali.org/general-use/kali-linux-sources-list-repositories and add to your /etc/apt/sources.list the "Retired Kali sana (2.0) Repositories" below the current one => deb http://old.kali.org/kali sana main non-free contrib
This did the trick for me. Hope it helps