iOS universal app acting weird

Question

I just converted my iPhone app yesterday to a universal app. I made the appropriate changes, but everytime I add new png files or icons, it gives me this error:

No such file or directory (/Users/username/Library/Developer/Xcode/DerivedData/APP-exqfnpxyqlazbechywnebtxqcykj/Build/Products/Release-iphoneos/APP.app/APP)

I am not sure what is causing this. I keep following the steps described in this blog. But it doesn't work. I've even tried resarting my computer several times. Does anyone have an idea what's going wrong?

Answer 1

You can delete the derived data from the Orginizer window just as the link said. What you also could do is click "Clean build folder" under the "Product" menu by holding down the alt-key. And then clean the project as usual.