Error message after order status update

[andre62]

Hi,
Since this is my first post, I'll start by thanking the regular contributors who so generously share their knowledge. I've had many, many questions answered with just a bit of searching.

Here's the error message I'm getting;
Warning: strstr() [function.strstr]: Empty delimiter. in .../public_html/includes/functions/functions_email.php on line 102

Warning: Cannot modify header information - headers already sent by (output started at .../public_html/includes/functions/functions_email.php:102) in admin/includes/functions/general.php on line 21

My file manager doesn't give me line numbers and if I count 102 lines, I end up here;
if ($block['EMAIL_TO_NAME']=='') $block['EMAIL_TO_NAME'] = $to_name;
I get the feeling I shouldn't count certain lines.

The status update email still gets sent out to my customer, it's just annoying to see this message everytime.

Thanks for your time.

[guynumber6]

I may not have a solution to the issue at hand, but Notepad ++ is a great editing tool that shows you line numbers. It is really easy to use and makes it easy to find items in the code.
http://notepad-plus.sourceforge.net/es/site.htm