I seem to have an issue where I will be using emacs for a while, and
eventually something happens which will corrupt all org buffers, and make
them unviewable (the buffer refuses to display, but otherwise does not
affect the rest of my emacs session).  The error I get is
"line-move-partial: Invalid face".  I can switch to text-mode and see it
normally.
I'm using emacs version 23.0.0.1.  I'm using org-mode version  5.13a.  This
seemed to coincide to my upgrade from org-mode version 4 to 5.13a.  This
happens on both terminal and x-windows versions of emacs.

Has anyone experienced this issue before?  Any ideas on how to solve it?