The bot now uses a lowercase version of the connection name as the name of the database - RENAME YOUR OLD DATABASE

core/db.py

@@ -9,7 +9,7 @@ def get_db_connection(conn, name=''):
     "returns an sqlite3 connection to a persistent database"
 
     if not name:
-        name = '%s.%s.db' % (conn.nick, conn.server)
+        name = '{}.db'.format(conn.name)
 
     threadid = thread.get_ident()
     if name in threaddbs and threadid in threaddbs[name]: