My app is a pretty image intense application. It's got about 150 images on it. Now I have completed my app, which looks magnificent on the iPad/iPhone Simulator, I now want to be able to test it on my iPhone and iPad. The problem is that most images don't upload to my iPhone or iPad. A few do, for some reason, but only the ones which are background images or images with transparency. Where my header images would be, is just a grey question mark. This has never happened to me before, and I have done everything correctly to build my app together. The app on the simulator works fine. The errors that I get is 'CopyPNGFile Error' I've re-downloaded the app so many times I can't mention, so something must be going wrong somewhere in the code. The same happens when I archive the app.

Have you seen this forum link, it may help https://www.buzztouch.com/forum/thread.php?tid=B43775D83C6C71BEB87C0B8&command=isSearching&currentPage=1&topicTitle=Question%20mark&createdBy=&repliedBy=&minViews=-1&maxViews=-1&minReplies=-1&maxReplies=-1&forumCategory=

That's strange - it shouldn't be related to code though - just Xcode. I'm sure you've gone through this, but have you tried downloading the source code to a completely different location on your hard drive? When you drag the images into Xcode, do you check the 'copy to project folder' box (or whatever it's called?). Have you tried resetting content and settings on your simulator to see if the problem doesn't then show up there? Have you tried renaming the project from the control panel then downloading? Have you tried uninstalling Xcode and reinstalling? Obviously, some of these are more drastic measures than others. Hopefully one will work though.

It is the image itself. One if the images aren't properly formatted. It has happened to me before when I accidentally saved a psd as png in photoshop. Saved as png but should have been psd. Try adding half of the images and try tracking down the culprit image... Did you use an image shrinker?

Have you tried ImageOptim to fix this? Jake

Clear your Xcode project image folder. Clean the Build and Paste again all the images in the Xcode (in your project folder). Hopefully it will resolve your problem.

I have seen this problem. If you look closely at the copypng error, it should tell you exactly the path and name of the image causing the problem. In my case, I think I caused the problem by moving image files around using both xcode and the external file manager option and getting things muddled. I ended up dragging the files out of the project, and from the directory and then adding everything back in again. That fixed it for me.