I just started using Eclipse with Processing and was trying to make it export an application. I followed the instructions at http://www.mostpixelsever.com/tutorial/eclipse. After using that page's simple test code, I used the Export menu with the "Mac OS X application bundle" option, with the main class as the class that extends PApplet, a suitable app name and folder location, and JVM 1.5. However, when I try to run the exported application, OS X refuses to launch the app because it is 'damaged or incomplete.'

I am not very knowledgeable about the way Java libraries work, so I may be missing something obvious.

Oh, and 'Run as Java Application' works just fine.

Edit: I tried exporting it as a Java applet as well, and that didn't work either, though with different results. It left this error message on the console: "Failed to load Main-Class manifest attribute from
/Users/stephen/Desktop/ProcessingTestbed.jar"

Any help is greatly appreciated.

My code:
Code:

import processing.core.*;

public class ProcessingTestbed extends PApplet{
 public static void main(String args[]) {
  PApplet.main(new String[] { "--present", "ProcessingTestbed" });
 }

 public void setup(){
  size(200, 200);
  stroke(155,0,0);
 }
 
 public void draw(){
  background(255);
  line(mouseX,mouseY,width/2,height/2);
 }

}  

I had tried Fat Jar with the same results. I was under the impression that in OS X, if you double-click a jar, it will be automatically run with the main class. There was, at least, a field in the OS X app export wizard for the main class.

You can re-package a JAR file into a MacOS .app. I've described the process on my blog.