The deploys were done from the ERA WebConsole, directly from the computer list (Left click, Deploy Agent, Deploy Agent from ERA server), and also from the Admin tab, under Server Tasks and Agent Deployment and setting up a specific task. The first system (a test) to which it was done was successful. Then, I set a task to deploy to all computers on the network (215 total systems) and this failed. So, I tried it in blocks of 20 systems, then 10 systems then 1 system at a time. Attempted this on about 10 different systems and it failed individually on each one.
On the first test deployment, which was successful, I simply deployed the agent, as this is a new install on this network and all of its computers and servers. The first deployment worked fine, as did the remote install of the Endpoint AV. I did not have to send an ERA Component Upgrade Task (Again, this is a brand new install of ESET software to this network.)