I am running Zencart 1.39f and googlecheckout 1.47.

I have my sandbox googlecheckout set up and I am using a shared SSL cert on my zencart.

My call back URL is correct in Google.

When I use GCO to process an order it forwards me to google, takes my payment and then will return me to my Zencart.

However when I am returned it shows my order number was not updated (instead shows me the last order number in the system) and I never see the googlecheckout order in zencart admin.

I am just looking for help with where/how to troubleshoot this.

You can see the behavior yourself at my store. It's all in test mode so you can do an "order" for fun.

http://g c r u n n e r. o r g/zencart