Cannot modify header information

[Hamish]

Hey, Im trying to install myBB with the Square theme but if I am a guest and visit a forum it comes up with this -

Warning [2] Cannot modify header information - headers already sent by (output started at /var/sites/f/forcental.uk/public_html/forums/inc/languages/english/vars_envy.lang.php:1) - Line: 1849 - File: inc/functions.php PHP 5.3.28 (Linux)
File	Line	Function
[PHP]	 	errorHandler->error
/inc/functions.php	1849	header
/inc/functions.php	1919	my_setcookie
/inc/functions_indicators.php	41	my_set_array_cookie
/showthread.php	624	mark_thread_read
Warning [2] Cannot modify header information - headers already sent by (output started at /var/sites/f/forcental.uk/public_html/forums/inc/languages/english/vars_envy.lang.php:1) - Line: 1849 - File: inc/functions.php PHP 5.3.28 (Linux)
File	Line	Function
[PHP]	 	errorHandler->error
/inc/functions.php	1849	header
/inc/functions.php	1919	my_setcookie
/inc/functions_indicators.php	225	my_set_array_cookie
/inc/functions_indicators.php	47	mark_forum_read
/showthread.php	624	mark_thread_read

Any help? Thanks - Hamish

[.m.]

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