Google Checkout Error - Help Please!

[g3steve]

Ive installed google checkout a few times before and never had a problem but ive just got an issue i cant get around, been searching around the forum but cant get to the bottom to it.

Basically when you add any product to the cart and click google checkout i get this error:

Oops!
Error time: 2010-05-26T21:10:03 (Coordinated Universal Time) (48785b292****)
We were unable to process your request.

Ive tested other merchant keys etc. and other account but this made no difference.

I have an active SSL on the domain but still no help.

Any advice would be great

Thanks

steve

[g3steve]

Anybody have an ideas or experience with this issue?

[g3steve]

Just looked in the integration console and found this error:

<?xml version="1.0" encoding="UTF-8"?>
<error xmlns="http://checkout.google.com/schema/2" serial-number="71f3ff8c-f973-43b0-831e-5e049*******">
<error-message>We were looking for the parameter buyButtonCart, but we didn't find it in the cart post; check your form fields.</error-message>
</error>


How do i fix this?

[g3steve]

Found the issue, Google checkout have stopped supporting Serbia as a country i can assign a tax rate to, removed this in tax zones and fixed the issue.