Version/File names no longer display under images in projects or albums...

Hello,

Hope someone can help. About a week ago in Aperture 2 my files names stopped showing up under images in albums and projects. Upgraded to Aperture 3 yesterday and the problem has come along. The file names are still there in meta and if I change view to image files only. How do I get the image/version name to display under the image again?

Greg