Database error after installing Post Thank you Hack

[ZUCCO]

So I installed this plugin

https://vborg.vbsupport.ru/showthread.php?t=122944

And I imported all the files in the correct directory but when I enable the plugin and go to a post or thread it gives me database error like this:

Database error in vBulletin 4.2.2:

Invalid SQL:
SELECT * FROM vb4post_thanks AS post_thanks INNER JOIN vb4user AS user USING (userid) WHERE post_thanks.postid IN (0Array) ORDER BY post_thanks.username ASC;

MySQL Error : Unknown column '0Array' in 'where clause'
Error Number : 1054
Request Date : Thursday, November 14th 2013 @ 02:40:45 PM
Error Date : Thursday, November 14th 2013 @ 02:40:45 PM
Script : http://tuxedogamers.com/showthread.php?20-Test&p=20
Referrer : http://tuxedogamers.com/forum.php
IP Address : 71.235.124.223
Username : Cocoa
Classname : vB_Database
MySQL Version : 5.5.33-31.1


However if I disable the plugin the page loads correctly and the plugin is still active, why?