When trying to make changes to the data (point 2.2. wp-admin/admin.php?page=solr_settings&tab=solr_option&subtab=index_opt&settings-updated=true), I noticed that the options (which taxonomies to use and which fields to index) are not saved. Even after selecting and saving, the system tells me “XX fields – none selected”. I can add or delete post types, but the changes within the post types are not being saved…