Google Checkout / Admin Zen Cart

Hello - I'm hoping someone can help me! I am trying to integrate the google checkout module into Zen Cart. I've been having one problem after another and have been crawling forums and support documentation for three days now.

I think almost everything is working except I can't get orders to post back to the admin panel.

I am able to complete the sale at google and then when I click to return to the site I get a 'your session has expired' error. For a while I was getting various errors in the google integration panel (500 then 401). Finally I'm not getting any errors but I'm not getting the data either.

I am in production mode with SSL installed. I believe my server is running php over cgi so I have .htaccess basic set to true. I verified I am using the right set of keys and all necessary settings are https. When I go to responsehandler I am prompted for the login and my google merchant id and key are accepted.

I do get two errors though:

Warning: require_once(/store/googlecheckout/library/googlemerchantcalculations.php) [function.require-once]: failed to open stream: No such file or directory in /home/bearboyg/public_html/store/googlecheckout/responsehandler.php on line 49

Fatal error: require_once() [function.require]: Failed opening required '/store/googlecheckout/library/googlemerchantcalculations.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/bearboyg/public_html/store/googlecheckout/responsehandler.php on line 49

I've confirmed the files are there. The 'include_path' looks funny to me but I have no idea what that should be. One other thing, the googlecheckout error logs aren't being written to even though they are set at 777.

Anyway -- I feel like I'm spinning in circles reading and re-reading the same posts and documentation. I think I'm close but am really discouraged. Any help would be greatly appreciated!!! There is probably just one silly thing I'm not seeing...

Thank you.

Christene

A few questions before I give a few places to look:

Are you wanting to use your own shipping calculations?
if so, have you filled in what you want those shipping rates to be?

If not, have you left your "Merchant Shipping Calculations" area's 0's or blank?
Have you populated the correct information for the "Carrier Shipping rates"?

Another area to look would be below:

Warning: require_once(/store/googlecheckout/library/googlemerchantcalculations.php) [function.require-once]: failed to open stream: No such file or directory in /home/bearboyg/public_html/store/googlecheckout/responsehandler.php on line 49

This error to me sounds like you didn't complete all the steps included in the install instructions (also mentioned in the Admin side when turning Google Checkout on). There is a link in your Admin >> Modules >> Shipping >> Google Checkout -- for merchant calculated shipping, you are supposed to run that program to build your shipping rules (could be the cause of this issue)?

Fatal error: require_once() [function.require]: Failed opening required '/store/googlecheckout/library/googlemerchantcalculations.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/bearboyg/public_html/store/googlecheckout/responsehandler.php on line 49

This error I believe is saying pretty much the same as the first but is more of a "yeah, sorry we couldn't open that file... 'cause it doesn't exsist' "

F.Y.I. not all stock shipping modules included with Zen Cart work with Google Checkout (and from experience, "Free Shipping on orders of $120+" Google Checkout has a habit of giving ALL orders free shipping regardless of cart total).

Hope this helps.