I'm not entirely sure how I did this, but I managed to delete the UI editor for Magazine Basic. When I go to appearance->magazine basic, a blank screen shows up.
Possibly related: the blog for the site I'm editing has disappeared. When trying to find blog posts I've tagged, I get this error:
Fatal error: Call to undefined function wp_trim_words() in /www/leonardliggio/wp-content/themes/magazine-basic/functions.php on line 943
I also have problems using the blog page set up through the UI - this error shows up:
Fatal error: Call to undefined method WP_Query::is_main_query() in /www/leonardliggio/wp-content/themes/magazine-basic/functions.php on line 1233
I've reinstalled the theme from scratch via ftp and reuploaded functions.php from a clean, unchanged download, but that didn't work. Thoughts?