Add to Cart giving me a blank screen

I am getting an Blank screen when I add a product to the cart ?

If I change it back to Classic Template it all works so i know it is something to do with my template using Estorenow now but have modified it but how can I find the issue.

Any help would be much appreciated as i was going live on Saturday !

Thanks

look in your log folder and copy the content of your latest errors here please.

see below:-

[28-Mar-2013 21:48:14 UTC] PHP Warning:  Cannot modify header information - headers already sent by (output started at /home/quantumi/public_html/moon-dream.co.uk/includes/languages/english/extra_definitions/estorenow/headermenu.php:1) in /home/quantumi/public_html/moon-dream.co.uk/includes/functions/functions_general.php on line 45

/includes/languages/english/extra_definitions/estorenow/headermenu.php:1

Find this file as it appears to be corrupted in line #1

Sir you are a star I put a space at line 1!

Never new about the Logs !

Learning bit by bit !

Well done.

I put a space at line 1!

/includes/languages/english/extra_definitions/estorenow/headermenu.php:[B]1[/B]

Hopefully you have learned a bit about reading error messages