Getting 405 Method Not Allowed error on POST request.. Please help.

[Aditya Hajare]

I am using orkut osapi PHP client library... i did not changed
anything in it yet.. just specified required credentials in global.php
and tried to test the client..
At first, it was giving me Content-Length header is missing error.. I
fixed it by manually adding Content-Length: 0 header in it's send()
function which makes the CURL calls...
Now it is giving me 405 Method Not Allowed error...
Bellow is the POST request response i have received :

[http_code] => 405
[data] => HTTP/1.1 405 Method Not Allowed
Content-Type: text/html; charset=UTF-8
Content-Length: 12463
Date: Sun, 12 Jun 2011 04:10:35 GMT
Server: GFE/2.0

I am using orkut php client library located at :
http://code.google.com/p/orkut-os-client-php/downloads/list
If someone knows what's going wrong in there, please let me know..!!

Regards
Aditya Hajare