existing cards cached as missing+example

causes errors like this:

A ActionView::TemplateError occurred in card#show:

 for card Oregon Solutions: Sorry Anonymous, You don't have permission to create Basic cards
 On line #1 of cardtypes/basic/_content.rhtml

   1:  <%= slot.render :raw_content %>
   app/models/card/permissions.rb

:80:in `ok!'
   app/models/card/base.rb:354:in `content_without_tracking'
   (eval):13:in `content'