Hello All ! I am running the following query againt a Calibre database: <pre>delete from books where id not in (select distinct book from books_custom_column_1_link left join custom_column_1 on custom_column_1.id = books_custom_column_1_link.value where custom_column_1.value like 'BAHN');</pre> And just recently this gives me the following error : Error: near line 1: no such module: fts5 I am using sqlite3 version 3.10.2. Strangly this behaviour started a couple of days ago. How can I check if sqlite3 (on a Synology NAS) is using FTS5 (and fix the obviously missing lib). And why is this command using FTS5 at all ? It looks to me like plain sql. Thanks for any advice on this matter in advance! YOS, Kuzorra