Problem with Canvas

Hi,
i have a problem running the canvas, one week ago the same application was running on my k750,
but this week (without changing the code, only the Image name from bg.png to grassland.png) there is an error in the application.

Please take a look at my Code and maybe you can tell my whats wrong. (Its running on the emulator the Images are in the res folder and the src folder).

Midlet Class

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class HelloMIDlet extends MIDlet 
       implements CommandListener {
 
  // The display for this MIDlet
	private Display display;    
   


  //private VSGameCanvas canvas;
  private MyCanvas mycanvas;
  public HelloMIDlet() {
	  
	  display = Display.getDisplay(this);
	  mycanvas = new MyCanvas();
	//  canvas = new VSGameCanvas(true);
  }

  public void startApp() {
   
  //  Display.getDisplay(this).setCurrent(mMainForm);
	  display.setCurrent(mycanvas);
	//  display.setCurrent(mMainForm);
   // mycanvas.setFullScreenMode(true);
    mycanvas.repaint();
	
  }
  public void pauseApp() { }
  public void destroyApp(boolean unconditional) { }
  public void commandAction(Command c, Displayable s) {
   // if (c == exitCommand) {
    //  destroyApp(false);
      notifyDestroyed();
   // }
  }
}

Canvas Class

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;



public class MyCanvas extends Canvas{
	Image bgImage;
	public MyCanvas(){	}
	protected void paint(Graphics g) {
		
		try{
			bgImage = Image.createImage("/grassland.png");
		}catch (Exception e){
				e.printStackTrace();
				g.drawString(e.toString(),0,0,0);
	
			};
			
			g.drawImage(bgImage, 0, 0, 0);
			
	}

		
}

it is moreless the Code from examples at diffrent websites.

Hi,
i noticed, that the midlet is running on nokia mobiles and on other k750i but mine (testing with friends). So does anybody have a clue?

hmmm i found out, that only the obfuscated version is not running… arghl