i tried to convert from phpBB2.0.22 and it say this

[phpBB Debug] PHP Notice: in file /install/convertors/functions_phpbb20.php on line 411: include(./../../phpBBx7m60nx/language/lang_/lang_main.php) [function.include]: failed to open stream: No such file or directory
[phpBB Debug] PHP Notice: in file /install/convertors/functions_phpbb20.php on line 411: include() [function.include]: Failed opening './../../phpBBx7m60nx/language/lang_/lang_main.php' for inclusion (include_path='.:/usr/local/lib/php')

i dont know what this means and i have no clue how to fix it please some one help me thanks