Did you change the name of the mesh? If that's the case, you'll either have to rename it back to what it was, start from scratch, or change the name of the mesh inside the project.xml file and rename all the .psd files in the project folder.
Program: Maya 2014 Subfeature: UV editor issue: - while renaming a the current uvset the current uvs disappear. - If an undo is attempted the uvs remain gone. Current work around: - save - copy uvs into new uvset - rename - delete old uvset This problem isn't persistent. It seems to be random, but if someone could shed…