XCode App Icon error

Question

I made PNG 58×58 image named [email protected] and set to app icon.
When build by simulator, the app correctly run.
But when real machine, the app outputs error
with message Failed to write PNG data for the app icon set from "AppIcon appiconse.../test.app/AppIcon29×[email protected]
Why do such error occur?

Answer 1

Try to find answer here - Build app with Xcode 4 - it always show some error about PNG image

There is solution:

You have to save your PNG files as NOT INTERLACED. Try to open the file in photoshop (or similar), save as, and select "Not interlaced".