[TYPO3-english] BE unable login error and session error

[Girmangus Hailu]

Hello there,

i have  install typo3 version 4.5.2 on my Ubuntu machine and it works as i
want. i have checked this on windows too simply exporting and importing. the
problem occurred when i shift to the web server.  as usual i simply import
the database and upload the files. but i face the following problem.
*Fatal error*: session_start() [<a
href='function.session-start'>function.session-start</a>]: Failed to
initialize storage module: files (path: ) in *
/opt/xampp/htdocs/tigrai/typo3/index.php* on line *122*
*
*
i try to contact the hosting company and they have given the code below to
add to the files. and i have added the code to the init.php
ini_set("session.save_handler", "files");
session_save_path ("./session/");

the session problem has solved but i can't able to login. i try to change
the admin password and add another admin using the typo3/install/ but not a
solution to my problem. it shows me the following error.

Your login attempt did not succeed

Make sure to spell your username and password correctly, including
upper/lowercase characters.

I thank you,

Girmangus H