Xcode 7 warning: The launch image does not have a valid extension

Question

Xcode 7 has warnings for my launch image set. It reads:

The launch image set "LaunchImage" references a file "[email protected]", but that file does not have a valid extension.

I tried removing the image and put it back again with no luck. What is it warning about and how can I fix it?

Answer 1

Try changing [email protected] instead of [email protected].