SQL error working with Database Optimizer

Hi, I’ve just install last version. When I was clearing “Orphan attachments” (Database Optimizer]), this error showed up:

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[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 ‘WHERE post_type = ‘attachment” at line 1]
SELECT ID FROM wp_posts WHERE post_parent NOT IN (SELECT ID FROM wp_posts) AND post_parent != 0 WHERE post_type = ‘attachment’
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Maybe WHERE clause should be AND:
WHERE post_type = ‘attachment’ –> AND post_type = ‘attachment’

Regards.