This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.
The Icon size for the iPhone plus in project settings appears to be looking for the wrong size. This causes the icon size to be incorrect in a default project.
Expected: The accepted size for the iPhone plus would be 180 x 180
Result: The expected size is 120 x 120 causing this error to be thrown
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