problem with setup.php3

[Ilya]

i just got *latest horde and imp from ftp. went through all install
instructions for horde, and was about to start setup.php3, but each time i
go to localhost/setup.php3 i get this message:
Please go to the top level directory for your installation and run "sh
./install.sh"; this will enable the configuration manager.



of course i did it already, but still get this message.

any suggestions?





Horde Versions
  a.. Horde: 1.2.4
  b.. IMP: 2.3.6
PHP Version
  a.. PHP Version: 4.0.4pl1
  b.. PHP Major Version: 4
  c.. PHP Minor Version: 4pl1
  d.. PHP Version Classification: release
  e.. You are running a supported release of PHP4. Enjoy the ride!
PHP Module Capabilities
  a.. IMAP Support: Yes
  b.. LDAP Support: Yes
  c.. MySQL Support: Yes
  d.. PostgreSQL Support: Yes
PHPLIB Configuration
  a.. track_vars: Yes
  b.. PHPLIB (is page_open() defined): Yes
  c.. I am now going to try to create a HordeSession class. If this line is
the last thing that you see, then you do not have class HordeSession defined
in the phplib local.inc file. Fix that before proceeding.
  d.. Created a HordeSession instance successfully.
  e.. Click here to test PHPLIB for Horde (If this link results in "Document
Contains No Data" or "Fatal error...", then you probably have not defined
the HordeSession class in the PHPLIB local.inc file).
Miscellaneous PHP Settings
  a.. magic_quotes_gpc set to Off: Yes
  b.. magic_quotes_runtime set to Off: Yes