[horde] Error searching imp folders

[Andre Luiz Paiz]

Dear Horde Team,
After upgrading to version 5.2, users are experiencing problems performing
searchs inside imp mailboxes.
The error in the log file displays the following:

WARN: HORDE [imp] [search] Could not open mailbox "impsearchvinbox". [pid
32115 on line 732 of "/var/www/html/horde/imp/lib/Imap.php"]

or

WARN: HORDE [imp] [search] Could not open mailbox "impsearch".

My CentOS server has the php-5.5.14-2.el6.remi.x86_64 package installed and
this error started after 5.2 upgrade from 5.1.4.

I appreciate if you can help me.

Thanks
  Atenciosamente
 
/André Luiz Paiz/
/Analista de Redes/
/Instituto de Química – Unicamp/
/andre.paiz at iqm.unicamp.br/
/Telefone: (19)3521-0197/