[HELP!!] Fatal error: Call to a member function query_read() on a non-object
 

I just finished updating my forum to the latest 3.8.2. After that, I installed vBSEO 3.3 as well. But suddenly one of my members notify me that she got an error when trying to view other user's profile (except me). This error occurs when trying to view a member's profile: "Fatal error: Call to a member function query_read() on a non-object in /home/nyunyu/public_html/forum/includes/functions.php(1485) : eval()'d code on line 9"

Please suggest me what I need to do to fix this.
I asked vBSEO staff to see if they know about this since at first I thought it was vbseo doing. But after turning off vbseo, the problem is still there.

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