No, since the latest update, you must also create a masternode private key.
at the beginning of step 15, do this before anything else:
darkcoind &
darkcoind masternode genkey
darkcoind stop
Save the output you get from this and add it to this part of step 15
cat >> ~/.darkcoin/darkcoin.conf << EOF
#------------
masternode=1
masternodeprivkey=[output from genkey]
addnode=23.23.186.131
#----------
EOF
The rest of step 15 should remain the same .
Note: if you already have
masternode=1
set in your darkcoin.conf, you will need to change it to
masternode=0
before the genkey command will work. If you are starting from scratch, you should be fine because the masternode= key isn't defined yet and defaults to =0.
Hope that helps