Try adding an “e” at the end of nod and you’ll probably get more help.
In Carrara 7 Pro there’s a checkbox in the render room, near the slider to control tile size that when checked, allows you to use multi-threading. There’s also a box to check to allow network rendering. There were substantial changes (and maybe improvements ) to the ntework rendering options, so maybe the layout has changed.
What version of Carrara are you using on the host machine? I don’t know if nodes from an earlier version will work with a host from a newer version. Frankly, with the troubles you seem to have, I wouldn’t be using the 8.5 beta for any mission critical renders unless there’s a specific reason to do so. Remember, its a beta with a time limited serial number. It’s a foregone conclusion that it’s going to be a paid upgrade when it’s out of beta, so unless you’re willing to risk having the finances available to get it, you may want to at least make sure that you’re creating and saving your scenes with the non-beta 8.x version of Carrara.