Could not load nib in bundle base internationalization-Collection of common programming errors

I have a project that I created in xcode 4.5 with a target ios of 5.0 and I used Base Internationalization. Base Internationalization moves the nib files to Base.lproj.

The project runs on my iPhone 4 running ios 6 and on my iPad 3 running ios 6. But this error shows when I try to run it on my iPad 1 running ios 5.1.1. In the Build Phase section of the target, the nib files are shown in red.

When I try to add the nib files to the Build Phases bundle resources, they add but they are still red (not found). I have tried every way I know to add the nib files to the bundle resources. How can I accomplish this?