[sattahipchris]

When I try to merge books, remove a book I get the following error.

calibre, version 3.48.0
ERROR: Unhandled exception: <b>SQLError</b>:SQLError: no such module: fts5

calibre 3.48 [64bit] embedded-python: True is64bit: True
Windows-7-6.1.7601-SP1 Windows ('64bit', 'WindowsPE')
('Windows', '7', '6.1.7601')
Python 2.7.15+
Windows: ('7', '6.1.7601', 'SP1', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Amazon.com Multiple Countries (1, 0, 0) &&

Fantastic Fiction (1, 5, 1) && Resize Cover (1, 1, 0) && Goodreads (1, 5, 3)
Traceback (most recent call last):
File "site-packages\calibre\gui2\actions\edit_metadata.py", line 582, in merge_books
File "site-packages\calibre\gui2\actions\edit_metadata.py", line 632, in

delete_books_after_merge
File "site-packages\calibre\gui2\library\models.py", line 416, in delete_books_by_id
File "site-packages\calibre\db\cache.py", line 62, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1647, in remove_books
File "site-packages\calibre\db\backend.py", line 1676, in remove_books
File "site-packages\calibre\db\backend.py", line 886, in executemany
File "c:\t\t\apsw-mc0now\apsw-3.27.2-r1\src\cursor.c", line 1136, in

APSWCursor_executemany.sqlite3_prepare
File "c:\t\t\apsw-mc0now\apsw-3.27.2-r1\src\statementcache.c", line 386, in sqlite3_prepare
SQLError: SQLError: no such module: fts5

Running windows 7 x64
Any help gratefully received