You should add "last version of java" to requirements.
I was having issues where minion wouldn't detect eso and addon folder even I manually find the addon folder. I saw another thread where someone was having the same issue and updating java helped him. I updated java and everything works now.
This is very interesting because Minion is packaged with its own version of java that runs inside a virtual machine. So you shouldn't even need java installed on your system. Thats why its not listed as a requirement.
I'll let our java programmer know and see if we can figure out why some people have to install the latest version of java.