[Freesurfer] Freesurfer qcache error

When running qcache (on a recent version of freesurfer) after running recon-all -s 4964-14_recon -all command, I get the following error:

ERROR: number of vertices in /usr/local/freesurfer/subjects/4964-14_recon/surf/lh.thickness does not match surface (138139,137319)ERROR: reading curvature file Linux localhost.localdomain 2.6.23.14-107.fc8 #1 SMP Mon Jan 14 22:07:11 EST 2008 x86_64 x86_64 x86_64 GNU/Linux

Any ideas? This happens for multiple subjects without any known cause or covariance.

--------------------------------------------------- FREESURFER_HOME: /usr/local/freesurfer

Build stamp: freesurfer-Linux-rh9-stable-pub-v4.0.2

RedHat release: Fedora release 8 (Werewolf)

Kernel info: Linux 2.6.23.14-107.fc8 x86_64