[horde] IMP 5.0.5 Autocreate.php trouble

[Luis Felipe Marzagao/Andamentos]

Hello:

Just installed horde 4.0.5 and imp 5.0.5 for testing purposes.

On every new login, the first time I click on "mail" module , I get this:

Fatal error: Call to a member function create() on a non-object in 
/var/www/horde/imp/lib/LoginTasks/Task/Autocreate.php on line 67

Is it a bug or something wrong with my system?

Thanks,
Luis Felipe