It appears that the authors of my quote generator plugin (wp-quotes) are gone, and the last WP upgrade (or maybe earlier, possible I didn’t notice) broke the admin interface to the quote management tool.
Nothing serious, it looks like the call to generate the link in the admin has changed. There are other quote tools out there, but changing would require much more attention than a blog with zero readers deserves. So for anyone else that might be interested, the very simple fix (in plugins/wp-quotes.php) is:
23,24c23
< global $submenu;
< $submenu['edit.php'][40] = array(__('Quotes'), 8, 'edit-quotes.php');
---
> add_submenu_page('options-general.php', 'Random Quotes', 'Random Quotes', 8, 'edit-quotes.php', '');
You can find an updated archive if you want here.
On a slightly related note, I’ve now collected enough quotes that I’ll change the font color to something other than the background color.