Ubuntu 16.04 Server Edition start: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused

in etc/init I put a .conf file:

# -*- upstart -*-
# Upstart configuration script for WordVectServer

description "WordVectServer"
kill timeout 5

pre-start script
mkdir -p /var/log/wordvecServer/
sleep 10 
end script

exec sudo WordVectServer server /home/marco/WVLoader/src/G.bin >> 
/var/log/wordvecServer/wordvecServer.log

start on runlevel [2345]

and made it executable with

sudo chmod +x wordvecServer.conf

But when trying to launch the execution:

marco@PC:/etc/init$ sudo start sudo chmod +x wordvectServer
[sudo] password for marco:
start: Unable to connect to Upstart: Failed to connect to socket 
/com/ubuntu/upstart: Connection refused

marco@PC:~$ sudo apt-get install upstart
Reading package lists... Done
Building dependency tree
Reading state information... Done
upstart is already the newest version (1.13.2-0ubuntu21.1).
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

So...what to do to solve the problem? Any hints? Looking forward to your kind help. Marco