[turba] problem browse at turba addressbook

[Mainul Islam]

Hi

Recently i have installed the latest horde alpha version. but i am having
problem to browse the turba address book.

Address Book (turba) H3 (2.2-ALPHA) 		
Calendar (kronolith) H3 (2.2-ALPHA) 		
Dynamic Mail (dimp) H3 (1.0-ALPHA) 		
Filters (ingo) H3 (1.2-ALPHA) 		
Horde (horde) 3.2-ALPHA 		
Mail (imp) H3 (4.2-ALPHA) 		
Mobile Mail (mimp) H3 (1.1-ALPHA) 		
Notes (mnemo) H3 (2.2-ALPHA) 		
Tasks (nag) H3 (2.2-ALPHA) 		
I have inserted the  new tables at my mysql database by dropping the old one.
and as per the documentation i have run the
turba/scripts/upgrades/2007-06-17_flatten_shares.php but i am getting the
following messages

PHP Notice:  Undefined property:  DataTree_null::$_db in
/var/www/html/horde-test/turba/scripts/upgrades/2007-06-17_flatten_shares.php on
line 49
PHP Fatal error:  Call to a member function getAssoc() on a non-object in
/var/www/html/horde-test/turba/scripts/upgrades/2007-06-17_flatten_shares.php on
line 53

while i am trying from horde to browse my address book its saying 

Failed to access the address book: Source not found

could you please suggest what to do.

Mainul Islam