DBD::Pg::st execute failed: function requires at least protocol version 3.0

[Yasser Shakoor]

Hi all

I am trying the same code on 2 different machines on one machine it is
running ok and on the other machine it is giving strange kind of error,
i have tried every thing but was not able to sort thois out so i thought
to take help from you people.
#!/usr/bin/perl
#
# This script will produce daily web access statistic reports
#
#

use DBI;

# if today is the first of the month then don't run :
$day = `date +%d`;
if ($day=="01") {
exit(0);
} else {

# Connect to database
        $conn =
DBI->connect("dbi:Pg:dbname=webstatinfo;host=database.webstar.co.uk",
"anila", "bdjx14eq");
# test to see if connecting!!
        if ( !defined $conn ) {
                die "Cannot connect to database!\n";
        }

        print ("I have connected to the database webstatinfo\n");

# Obtain all the data from the database and put into a series of arrays
# @domain1 is an array containing all the data for the first domain in
# the postgres database, @domain2 for the second domain etc..

        print ("GETTING DATA FROM DATABASE\n");
        $querystring=("select output_filepath, hostname, logfile from
loginfo");
        $result = $conn->prepare($querystring);
        if ( !defined $result ) {
                die "Cannot prepare statement: $DBI::errstr\n";
        }
        $result->execute;

        $i=0;
        while ( @row = $result->fetchrow()) {
                $this_domain = "domain$i";
                @$this_domain = @row;
                print "$this_doma...@$this_domain\n";
                $i++;
        }
        $numweb = $i;
        $result->finish;
        $conn->disconnect;

The out put on the machine where i am getting the error is as below:

I have connected to the database webstatinfo
GETTING DATA FROM DATABASE
DBD::Pg::st execute failed: function requires at least protocol version
3.0 at ./analogscriptdaily line 34.
DBD::Pg::st fetchrow failed: no statement executing
at ./analogscriptdaily line 37.


There is no problem in connecting to the database the line number on
which error is coming up is:
$result->execute;

i have tried uninstalling the DBI and DBD module and installing it from
cpan but still getting the same error any help in this matter will be
appreciated.