I’m getting an SQL error for any search text I enter:
A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND (title LIKE '%stream error%' OR body LIKE '%stream error%') LIMIT 250' at line 4
SELECT topic_id FROM exp_forum_topics WHERE board_id = '1' AND ) AND (title LIKE '%stream error%' OR body LIKE '%stream error%') LIMIT 250
Filename: modules/forum/mod.forum_core.php
Line Number: 13601
Best regards.
EDIT: Seems to work now. 
