Exported file just show a gray screen, even with a simple "example" file. (run mode is fine)

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Open a project. You can use some project from "examples" folder, like 
"DepthMap3d"
2.Run the project. (It works fine!)
3. So, export.
4. "application.macosx" folder will be created.
5. try to execute the compiled file. (it doesn't work. Just show a gray screen).

What is the expected output? What do you see instead?
Expected the project running like in "run" mode. But just show a gray screen.

What version of the product are you using? On what operating system?
- SimpleOpenNI-1.96
- Processing 2.1
- MacOsX 10.9

Please provide any additional information below.

Original issue reported on code.google.com by boladene...@gmail.com on 20 Nov 2013 at 1:50

[GoogleCodeExporter]

I heard that signing the jar files might help. But im not sure cuz i didn't and 
won't have a chance to try it out in a long while. Hope someone could try 
signing it and tell me if it works. Thx. To sign a processing jar file, you can 
google it up for instructions

Original comment by p99...@gmail.com on 13 Sep 2014 at 9:58