If you used FreeSurfer 7, it could be a symbolic link to lh.pial.T1 that did not translate well in one of your data duplications. If this is the case, delete lh.pial and copy lh.pial.T1 instead.
If you used FreeSurfer 7, it could be a symbolic link to lh.pial.T1 that did not translate well in one of your data duplications. If this is the case, delete lh.pial and copy lh.pial.T1 instead.