[horde] Problem with turba and nag

[Ana Carolina da Cunha L. Giulianetti]

Hello
I'm having the following problem - when I enter a contact or manage my address book I get the message: no object required. I can not add new contacts as well as new tasks, contacts and notes but function normally.
In the log I get the following message: hook_share_init hook in application horde not called.
What can be?
thanks

Carol