I'm running ML 8.0.1.4 of the storefront and we are trying to integrate Google Checkout but having some difficulties. It's pretty much a vanilla install, no custom code or anything other than the theme.

I setup the settings per the Google Checkout Setup instructions (http://manual.aspdotnetstorefront.co...-checkout.aspx) but I'm getting error when I actually click on the button to check out with Google Checkout.

Code:
StartIndex cannot be less than zero.
Parameter name: startIndex 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.ArgumentOutOfRangeException: StartIndex cannot be less than zero.
Parameter name: startIndex

Source Error: 

Line 1186:            {
Line 1187:				string analyticsdata = CommonLogic.FormCanBeDangerousContent("analyticsdata");
Line 1188:				Response.Redirect(GoogleCheckout.CreateGoogleCheckout(cart, analyticsdata));
Line 1189:            }
Line 1190:        }
It seems to be on the ShoppingCart.aspx.cs page.

Does anyone have any thoughts on the issue?

Thank you,
Micah