I think the answer to this question will change over time, because Apple is constantly changing the rules for checking applications. These validation rules will only appear when you submit your application to the AppStore.
In this particular situation, a validation error occurred to me while downloading the application on 03/08/2012.
The solution was quite simple. I had to move to the icon files that I found in the folder nested in the project directory, down to the TOP LEVEL project directory, in which there is a project file. As soon as I did this and read the files back to Resources in my project, the validation error disappeared.
Of course, you should check that this problem is not caused by incorrect file names, i.e. the differences between your plist file and the true icon file names in your file system.
Moonwalker Aug 03 2018-12-12T00: 00Z
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