Asset Catalog Compiler Error
ios7, xcode
Solution
I had this problem when I accidentally saved a .psd as a .png. Converting the image to an actual png instead of a Photoshop file fixed it for me.
Problem
I'm not sure what I did to get this error in Xcode 5: "None of the input catalogs contained a matching app icon set named "AppIcon"". My app was building fine - then my machine locked up tighter than the arctic - don't know why - and now I get this error. (There was an existing answer to this same question - but I couldn't quite understand it. Sorry) Thanks for any help.