Resolved with wiki upgrade.

From Manu Sporny back on Feb. 17th.  Just adding this to the ticket for more
documentation.  It could be that upgrading SMW and MW will clear all this up
magically, but putting this here so I have something else to check against.

> Whenever I try to undelete the Developer-FAQ page on the rdfa.info/wiki
> page:
>
> http://rdfa.info/mediawiki/index.php?title=Special:Undelete&target=Developer-faq
>
> I get the following error:
>
> Fatal error: Class 'SMWFactbox' not found in
>
/var/www/rdfa.info/mediawiki/extensions/SemanticMediaWiki-1.1.2/includes/SMW_Hooks.php
> on line 135

Assigning to nkinkade.

IIRC this is an interaction between our older version of SMW and an extension
Steren wrote.  We probably just need to upgrade everything (although that may
require updating the extension).

*Edit a page on wiki.creativecommons.org with SMW markup eg
http://wiki.creativecommons.org/Creative_Commons_Technology_Summit_2008-12-12
*Click show preview
*Preview contains repeating factbox