When I try to install phpbb3 on the server using mysql or mysql with extension everything works well until create database tables option, where I get following error message..

[phpBB Debug] PHP Notice: in file /includes/utf/utf_tools.php on line 1828: strtr() [function.strtr]: The second argument is not an array
[phpBB Debug] PHP Notice: in file /install/index.php on line 437: Cannot modify header information - headers already sent by (output started at /includes/functions.php:2922)
[phpBB Debug] PHP Notice: in file /install/index.php on line 438: Cannot modify header information - headers already sent by (output started at /includes/functions.php:2922)
[phpBB Debug] PHP Notice: in file /install/index.php on line 439: Cannot modify header information - headers already sent by (output started at /includes/functions.php:2922)
[phpBB Debug] PHP Notice: in file /install/index.php on line 440: Cannot modify header information - headers already sent by (output started at /includes/functions.php:2922)


I am unable to install it on my account... please guide me..

You're better off asking the phpbb team, these look like either bugs in your configuration or bugs in the version of software you have.

Have you CHModded the files to 777? Have you fooled around with any of the Phpbb files before you uploaded them to your site?