I've just installed Go2Shell 2.5 (the latest version I believe) on my MacBook running MacOS X 10.11.6. However in all finder windows I get a "?" icon rather than the Go2Shell icon. When I click the "?" icon, a window with the message "The item can't be found." opens up. Do I need an older version of Go2Shell for El Capitan? If so, I can't seem to find one!