Help! After customer add item to cart, the page will become blank

Hi, I've installed zencart 1.38 a while ago and the store was running fine(got a few orders) in the past month. However I was told by one customer just now that when he tried to add an item to shopping cart by clicking "Add to cart" button, the next page will be blank(supposed to be cart content if I remember correctly). I tried it myself and found the same. How did this happen? The store was running fine since I configured it in Jan and I didn't do any changes since.

Any inputs will be greatly appreciated!

Oh, by the way the store address is https://www.inkrefillable.com

Run the debug utility, available from the free software add ons tab above. This will help you find the problem.

Tina

Hi, thanks for the advice. I uploaded the debug file and got the following error message in the log:
[12-Mar-2009 14:24:49] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/public_html/inkrefillable/includes/languages/cold_steel/english.php:1425) in /home/public_html/inkrefillable/includes/init_includes/init_templates.php on line 78

Does anyone know what this error message mean? Thanks!

OK I reinstalled the coldsteel template and that seems to have solved the problem. Thanks.