Microsoft JScript runtime error '800a139e'

DB ERROR:INSERT INTO SESSION(ID,LASTACCESS,DATA) VALUES ('e5da7c628c9a3ebbd67b06f3429f74a2',NOW(),''),[MySQL][ODBC 3.51 Driver][mysqld-5.5.34]Duplicate entry 'e5da7c628c9a3ebbd67b06f3429f74a2' for key 'PRIMARY'

/lib/v2/ESBrain/Db.js, line 106