I got the errors below during a recent upgrade from Web Services for GP 10 to GP 2010
General Access Denied Error
Cannot access the policy service. Verify that the configuration file exists and contains the correct path to the polcy service
Index was out of range. Must be non-negative and less then the size of the collection. Parameter name: index
An exception occurred that the exception subsystem was unable to log. Consult your System Administrator
In this article I talk about the solutions. I'll warn you in advance that you won't like some of it. Be warned.