Need help with Can't create ICOFile: Can't read bytes: 4 while creating ClientBundle

I have been trying to figure out this error for past two days but I have no idea what is happening. I am totally lost. I have stripped out everything from the project and still no lock. Here is what I have:

1. 

package test.webclient.widget;

import com.google.gwt.core.client.GWT;

import com.google.gwt.resources.client.ClientBundle;

import com.google.gwt.resources.client.ImageResource;

public interface ImageResourceBundle extends ClientBundle{

    public static final ImageResourceBundle INSTANCE = GWT.create(ImageResourceBundle.class);

    @Source("rtick.gif") 

    ImageResource rtick(); 

}

In my Eclipse, I have put rtick.gif file in src/test/webclient/widget folder. If I don't put it here, then Eclipse shows a red squiggly underline under     @Source("rtick.gif")  so I know it is looking for it at this location.

However, when I do Google -> Compile on the project, I get the following exception:

Can't create ICOFile: Can't read bytes: 4

   Computing all possible rebind results for 'test.webclient.widget.ImageResourceBundle'

      Rebinding test.webclient.widget.ImageResourceBundle

         Invoking generator com.google.gwt.resources.rebind.context.InlineClientBundleGenerator

            [ERROR] Generator 'com.google.gwt.resources.rebind.context.InlineClientBundleGenerator' threw an exception while rebinding 'test.webclient.widget.ImageResourceBundle'

java.lang.NullPointerException

at com.google.gwt.resources.rg.ImageResourceGenerator$BundledImage.addImage(ImageResourceGenerator.java:99)

I have put this rtick.gif pretty much everywhere in the project. So I don't know where is it looking for this file?

If I don't create the ImageResourceBundle, the project compiles file and works well in the dev mode as well. Everything works. Except this ImageResourceBundle thing.

I also tried adding a new ClientBundle using the wizard. But that same error happens to that as well. 

Please please please help!

thank you for reading.

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