Google Checkout Errors

Google Checkout Errors

When I click the link in my generated invoice email for google checkout, it goes to

https://invoice.zoho.com/ZB_GoogleCheckOut.cc?EInvoiceID=NDY5NTcwMDAwMDAwMTIwMDEjMTIzMDAzNDc4OTAxNyMxMQ__

(it's just a test invoice, so I don't care if that link eventually works and someone sees the results)

But it sits for a while, and then I get this error:

"The page you are looking for is temporarily unavailable. This can be because of an unhandled error or network connectivity issue. We will duly fix this issue."


Firebug shows that it's trying to connect to

https://invoice.zoho.com/STATE_ID/ZB_MI_GoogleActionHandler.ma?SUBREQUEST=XMLHTTP

with post param:

EInvoiceID: NDY5NTcwMDAwMDAwMTIwMDEjMTIzMDAzNDc4OTAxNyMxMQ__


This is the first time I'm trying to use Google Checkout, so I'm not sure if I have a setting wrong, of if there's something wrong with the service.  Is anyone else getting this?

Thanks in advance.