Uncaught exception thrown in shutdown function.

PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 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 '"semaphore" WHERE (value = '10013312386869631c762908.34368592')' at line 1: DELETE FROM {semaphore} WHERE (value = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => 10013312386869631c762908.34368592 ) in lock_release_all() (line 269 of /home/gebsoftware/includes/lock.inc).