Dynamics GP Connector

I have installed the Dynamics GP Connector.  I have set up the Microsoft Dynamics CRM 2011 Adapter successfully.

However, when I enter the information for the Dynamics GP Adapter, I am getting the following error message:

A connection to the Microsoft Dynamics GP Web Service could not be validated using the "http://VM-SQL08R1-ST1:48620/Dynamics/GPService/GPService" URL.

When I enter the following URL into my browser: http://vm-sql08r2-st1:48620/Dynamics/GPService  the appropriate page appears to show that my Web Services are installed correctly.