Delegate class '<classname>' has no Invoke method, so an expression of this type cannot be the target of a method call
A call to Invoke through a delegate has failed because Invoke is not implemented on the delegate class.
Error ID: BC30220
To correct this error
Ensure that an instance of the delegate class has been created with a Dim statement and that a procedure has been assigned to the delegate instance with the AddressOf operator.
Locate the code that implements the delegate class and make sure it implements the Invoke procedure.