variable passed to each() is not an array - caused by Ultimate SEO mod ?

I'm getting these errors:

Warning: Variable passed to each() is not an array or object in /home/yoursalt/public_html/includes/classes/shopping_cart.php on line 1708

Warning: Cannot modify header information - headers already sent by (output started at /home/yoursalt/public_html/includes/classes/shopping_cart.php:1708) in /home/yoursalt/public_html/includes/functions/functions_general.php on line 44

Any thoughts?

Oh, so you know, I'm getting this when I try to add a product to the shopping cart from a category page. Also, when I try to add a product to the cart from the product page it says there are no products in my cart.

https://www.yoursaltlamps.com

Thanks!

What version of Zen Cart?
What version of PHP?
What version of MySQL?
What addons have you installed? or customizations made?

Server OS: Linux 2.6.9-42.0.10.ELsmp

Database: MySQL 4.1.22-standard

PHP Version: 4.4.2 (Zend: 1.3.0)

HTTP Server: Apache/1.3.37 (Unix) PHP/4.4.2 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2635.SR1.2 mod_ssl/2.8.28 OpenSSL/0.9.7a

The only addons I installed was the Ultimate SEO URLs, for URL rewriting.

http://www.zen-cart.com/index.php?main_page=product_contrib_info&cPath=40_47&products_id=231

I also added something to the .htaccess to include www in all the URLs.

Did this happen before or after installing the SEO mod ?
What happens if you remove it ?

I don't think I can remove the SEO mod without starting over with a fresh install.

Well, that becomes the next question ... does it work properly with a clean install on your server?

That error typically only occurs when a mod or customization has changed something in a core file incorrectly, or if an FTP upload has failed to properly upload all files, or a combination of both.

So, I tried another install in a new folder, and added a couple products, and I got the same error.

I probably should have checked this before building the whole site.

I installed the with Fantastico, does that ever cause problems?

https://www.yoursaltlamps.com/test1

Okay, so I lied. I tried a fresh install on a different domain name and it worked just fine.

Will the mod-rewrite work with just changing the .htaccess? I'm guessing it has to have been the Ult SEO thing that broke the site.

It's definitely the Ult SEO URLs mod that's breaking the site.

Any good idea on alternatives?