I have created a clone, named asa-template.thesenioragent.com and it works just fine.
I cloned that, named seniorsrealestate.thesenioragent.com and it works fine.
I installed 3WP Broadcast, and it is working fine - clones posts across the network.
I went to one of my domain hosting companies and forwarded a domain (seniorsrealestate.ca) to seniorsrealestate.thesenioragent.com and now when I go to thesenioragent.com, I get a 500 Internal Server Error.
The error logs in c-panel don't show any errors, and I am able to log into the dashboard of http://thesenioragent.com; I just cannot visit the site.