title: NullPointerException when trying to load an FXML file - only when run as Jar file
body: <p>I'm developing a small application to learn JavaFX with. I've run into an issue where when I run my app with an IDE (Eclipse) it works perfectly. However when I export the project to a runnable Jar file, and try to run the jar file, the window I want to pop up doesn't. I've exported it as every type of the three options eclipse allows.</p>
  
  <p>I ran it through the command line to get the stacktrace:</p>
  
  <p><a href="http://pastebin.com/tfkJFnEZ" rel="nofollow">http://pastebin.com/tfkJFnEZ</a></p>
  
  <p>The rest of the app works great, just this one window. What is puzzling to me (as a beginner) is why it will run in Eclipse but not after exportation. I'm not sure what is changing in the way I want to open the file, so I'm not sure where to look for my error.</p>
  
  <p>If there is anything else I need to provide to assist just let me know, I appreciate any advice anyone can give.</p>