I was having an issue where my wingpanel had disappeared, and in trying to solve it I did the following:
sudo apt-get purge wingpanel
sudo apt-get install wingpanel
sudo apt-get purge indicator-synapse
and then rebooted my computer.
Now my wingpanel is back, but rather than having the eOS theme and layout it has the GNOME theme (pictured below). When I try
killall wingpanel, the commands execute but nothing happens.
Another issue that arose is that plank does not open on startup, but it is able to startup from the terminal.
Any input on how to change my wingpanel back to the default eOS theme, and how to have plank open on startup is greatly appreciated.