Network service discovery disabled

[MarkHaysHarris777]

...  even though I'm logged in as a user with administrator privilege, the editor won't save, complaining that I don't have the necessary privilege. Is it necessary to invoke a particular program from a command line?

Administrator privileges give you specific rights like the ability to use the sudo command, because your administrator id is in the sudoers file.  Try this :

sudo  vi  <path/filename>

or 

sudo  gedit   <path/filename>

or 

sudo  nano  <path/filename>

hint:  the sudo command gives you temporary root privileges  ::  it will prompt you for your password !