I think I see the problem.  Look at the order number on that project in the queue.  It's set to render as the second process for some reason (I'm assuming you may have canceled the first process), and it's waiting for the first one to finish.  However, since there is no previous order number in the queue, it's just gonna sit there and wait forever.

I must assume you already tried rebooting your machine to reset the queue, and starting over again.  I had the queue working, and it works pretty good.  What I did was open a PZ3, send it to the queue, then after it's in there, go and open another, do the same, etc. The first one you sent to queue should be order number 1 of course, and once you have a bunch in there, you can change the order numbers around for all the other processes, but never change the first one from being first, or it might screw everything up.