title: Why does resource bundle copy .png as .tiff images?
body: <p>I've created a static library and a resource bundle for reusing code and assets across several projects.</p>
  
  <p>Within the static library, I have a manager class whose sole purpose is to create other <code>UIViewControllers</code>, whose views are created from <code>.xib</code> files (using the common <code>initWithNibName:bundle:</code> method).</p>
  
  <p>When I create the view in Interface Builder, the images show correctly. However, when I run the app on the simulator, I get this error:</p>
  
  <pre><code>    Could not load the "&lt;image_name.png&gt;" image referenced from a nib in the 
      bundle with identifier "com.&lt;my_company&gt;.&lt;app_identifer&gt;"
  </code></pre>
  
  <p>After hours of grinding, I finally inspected the resources bundle, and I found that the .png files weren't in it! Instead, <strong>.tiff</strong> files of the same name (excluding @2x versions) were there instead.</p>
  
  <p>All of the images are included within the bundle's build phase under <strong>copy bundle resources</strong> , and I've used the images on other iOS projects (so they're not corrupted).</p>
  
  <p>Has anyone else experienced this? Is it safe to assume that the images will always be added to the bundle as <strong>.tiff</strong>? (And if so, is it safe to just change the image name in interface builder to <strong>.tiff</strong>?) Or am I doing something incorrect here?</p>
  
  <p>Thanks for your help in advance.</p>