Forums / Cotonti / Extensions / User account plugin

Please advice on a account plugin.
I'w tried this one.But it gives out an error:

Fatal error : SQL error : 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 '' at line 5

There was a plugin "Control panel" which had a function "Bookmarks".But it doesnt work on cotonti.

H e l p !