I went there, but didn't see anything related to Plugins... And I actually already have this plugin, and activated. Don't see it, though. Going to look again, maybe it's in the other part, not networked.
ALSO, I found the directory that the system is looking for. Not that it exists, but the name. It wasn't in the Codex, but in the Network Setup page of the Dashboard. It's /home/content/23/10255823/html/. Asks that both the .htaccess and the wp-config.php files are added here. This would be created in the root?
You mentioned a 'server caching problem.' I have not yet been able to go to the Dashboard of either of the additional sites I created space for. I'm on the verge of deleting them and starting over. Since the content isn't there yet, it won't matter. You've been extremely helpful, though. The server cache w/b a GoDaddy issue, and I'll have to pursue it after class tomorrow.