I tested the voting system out on my end on several coins without an issue, if the problem persists please let me know.
The problem easily is reproduced in two browsers: go to
coin listing, select first random coin for example, select "thumbs up" and click "rate", get this message:
"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 name = 'Aeoa'' at line 116"
From four times of votes, only one passed successfully.