[horde] Consults horde-imp-mysql * Database Error

[Felipe Stuardo]

sorry my english is not good, but i have a big problem
, I now get this message just before I log in with de webmail.
 
Database error (HordeDB): Invalid SQL: replace INTO active_sessions 
VALUES 
('7d6c1c1f55b313b4beb6141bffe272a3','HordeSession','SG9yZGVTZXNzaW9uOiR0aGlzLT5p 
biA9ICIiOyAkdGhpcy0+cHQgPSBhcnJheSgpOyA=','20000316193259')
Database error (HordeDB): Session: freeze() failed.

I use horde; imp; mysql ....
Any idea why?

thanks
felipe