So, my current theory for my trouble with my app is a memory leak. I'm trying to get a heap snapshot to investigate but...
When I try to use node-inspector, there is no Profiles tab:
And when I use nodetime and press "Take Heap Snapshot" on the Memory Profiler tool, no output appears. Note that the output from the "npm install nodetime" looks good: http://pastebin.com/ZGk6ZuNL
And here are the modules I'm using: http://pastebin.com/UFS6jW5X
Did you try this module? Has more commits on github. https://github.com/c4milo/node-webkit-agent