Google Checkout module for ZC 1.3.x (beta)

[khopek]

I can checkout through ZC successfully. The problem is that GC is not
updating ZC.

The GC -> Integration Log shows not entry what so ever.
my-site/googlecheckout/logs/response_error.log shows:
"Invalid or not supported Message"

This happens with SSL on or off in my test environment and
in my live environment.

I tried running Rupo's responsehandler_test.php and I get the same
error.

I've also tried with and without htaccess - Same error - Invalid or not supported Message.

My testing environment:
* Zen Cart - 1.3.7
* Google Checkout Module - 1.4.5
* PHP 5.1.2

My live environment:
Zen Cart - 1.3.7
Google Checkout Module - 1.4.5
* PHP 4.4.4-8

I'm having the same problem. I've already had 3 orders through GC and its not showing in admin. I am getting emails from Google saying it's failing. I have zen v1.3.8 and the GC for it.

Don't know what the htacess thing is though?