SplitView[1290:307] Could not load the \"canary04.png\" image referenced from a nib in the bundle with identifier \"xx.co.mycompany.ipad.SplitView\"
In my case all images where displaying fine on devices with >iOS 7 but not with iOS 6.1.
The solution was that iOS7 is case sensitive but iOS 6.1 wasn't for me. I had images named like "myImageName" and also named "myimagename" witch leads my old iPhone 3 to be unable to display these images.
So renaming them solved it.