I broke my Paypal link?

I had everything set up and working fine.
My shopping will allow you to checkout with Paypal, Google and Amazon.

All was working well, was consistantly getting payments through all three.

Right now my Paypal link goes to this page and stops, just a white screen.

https://www.midwestnotebooks.com/ipn_main_handler.php?type=ec

The only change I have made recently was to remove the header.jpg from the shopping cart page.

Did removing the header break it?

Any help understanding what I did would be appreciated.

Oooppssss.
I did make a change to .htaccess but did not like the results so I reuploaded my backup of .htaccess

Is it possible my backup was corrupt and lead to this issue?

So, you did something that suddenly caused blank pages? Use the utility in this article, found by searching the FAQ area for "blank page": https://www.zen-cart.com/tutorials/index.php?article=82

Thanks,

Ok, here is what I did.
I wanted to remove the header image from the shopping cart page so I added #shoppingcartBody #headerpic{display: none;} to the end of the stylesheet.

I installed the debug and got these messages:

PHP Warning: Cannot modify header information - headers already sent by
(output started at /home/midwest2/public_html/includes/init_includes/init_category_path.php:51)
in /home/midwest2/public_html/includes/functions/functions_general.php on line 44

[03-Nov-2009 11:21:42] PHP Warning: Cannot modify header information - headers already sent by
(output started at /home/midwest2/public_html/includes/init_includes/init_category_path.php:51)
in /home/midwest2/public_html/includes/modules/payment/paypalwpp.php on line 1737
[03-Nov-2009 11:21:42]

I went back and removed the addition to the stylesheet but still get the errors.

Can I recover from these errors?
Is there a better way to remove the header from the shopping cart?

Any help would be appreciated.

plsony:

PHP Warning: Cannot modify header information - headers already sent by
(output started at /home/midwest2/public_html/includes/init_includes/init_category_path.php:51)
in ...Searching for "headers already sent" in the FAQ area brings up this article: https://www.zen-cart.com/tutorials/index.php?article=87
You've got a problem on line 51 of the indicated file.

plsony:

I went back and removed the addition to the stylesheet but still get the errors.
That's unrelated.

Thanks!