After insane amounts of searching I've gotten to a point where my code gives me no error messages, but just produces a black project window (:().  After trying a bunch of methods, I found that the code found here (cant post links yet, it seems) seems to be one of the few freely available working methods... so I've been adapting it to my purposes.  Here is my code as it now stands:  

Ugh, the site won't even let me show the code because there are url's in it.  Here is the "link" for pastebin... pastebin (dot) ca/1410727

I am not sure if the URL's are being built incorrectly, and I'm still very early in my attempts to fix this... I just thought it was a good way to break into the community :).  Any insight into why I am getting a black screen returned instead of an image would be much appreciated.  Thanks!

The main issue with the code I see is that you never call search()...
Now, if I add it, I get an error on the line with node = _x.getChild(1); (no children?).