I tried to upload my iPhone application to the App store, but received the following error: The binary you uploaded was invalid. The icon file must be in .png format. The icon file IS in .png format, size 57x57, so assumed it is a bug and tried to upload with Application Uploader, when I got another error: Application failed codesign verification. The signature was invalid, or it was not signed with an Apple submission certificate.
I followed every single step, and it is not working... it is driving me crazy! Please advise what should I do!