the old one is still there
/usr/sbin/ettercap
if you want to uninstall the new then do this
to install the old one thenCode:rm -rf /usr/local/share/ettercap && rm -rf /usr/local/lib/ettercap && rm -rf /etc/ettercap && rm /usr/local/bin/etter*
or reinstall the oldCode:apt-get install ettercap-graphical ettercap-common
hope that helpsCode:apt-get install --reinstall ettercap-graphical ettercap-common