Shopping Cart Page Not Found / Cant view cart or checkout

I've installed my zencart on my server twice, and when I moved my cart into production....now when someone added something to their cart it appears in the counter cart to the top left.

However when you click view cart it returns:

I did put a template on this cart that I got from template monster, and I'm hoping that this isn't the cause of the problem, but in my test installation you could see the product in the cart, but once you hit the pay pal button to pay then you got a blank screen with the url:
http://preferredcell.web.aplus.net/zen-cart/ipn_main_handler.php?type=ec

now I checked and I did have the express checkout module loaded, and moved all files ..

This new installation can't even find the cart eventhough shoppingcart.php is in the base directory??

Can anyone offer any suggestions?

http://wilsoncelluarbooster.com is where my production cart is located if anyone would look.

Switch to the default "Classic" template and perform your tests again. That should confirm whether it is your custom template that is the cause of your problems.

Thanks for your tip,

I tried switching back to the default green template, but it still came up with "Page Not Found" when trying to add something to cart then (because it defaults to the shopping cart once you add something to cart) in that template.

Is there something else I could be missing?

thanks

For the blank page checkout problem with PayPal Express Checkout, use the Debug Error Logging Utility mod to help nail down the problem.

There's an FAQ on dealing with blank pages here as well.

For the redirect to a missing shopping cart page problem, here are some more questions:

• what other mods do you have installed on your site.
• have you verified that the shopping cart page really exists.
• what's the setting for the "Display Cart After Adding Product" field under Configuration > My Store. Play around with the setting for that field and tell us the results.