I think I just needed to have the robot directory rebuilt. When I deleted the directory and grabbed the latest bot archive it started working again.
So I have three instances running on the server (rinzler) and one running on my personal computer (tron). I should be looking at actual cores and not threads, right? Because the Xeon in the server has 4 cores but 8 threads. And the Xeon in my personal computer has 4 cores and 4 threads. Three instances each?