Getting System.ObjectDi sposedException from a web service call

[Naveen]

Hello all,
Environment - Winforms app calling into a webservice

Exception returned - "A first chance exception of
type 'System.ObjectD isposedExceptio n' occurred in
system.dll"
Additional information: Cannot access a disposed object
named "System.Net.Soc kets.NetworkStr eam".

We are making a webmethod call that gets back a simple ID
[integer].

The generated proxy -
-------------------
[System.Web.Serv ices.Protocols. SoapDocumentMet hodAttribute
("http://tempuri.org/GenerateEntityI D",
RequestNamespac e="http://tempuri.org/",
ResponseNamespa ce="http://tempuri.org/",
Use=System.Web. Services.Descri ption.SoapBindi ngUse.Literal,

ParameterStyle= System.Web.Serv ices.Protocols. SoapParameterS
tyle.Wrapped)]
public void GenerateEntityI D(string IdentityType,
int IdentityCount, ref int IdentityValue) {
object[] results = this.Invoke
("GenerateEntit yID", new object[] {
IdentityType,
IdentityCount,
IdentityValue}) ;
IdentityValue = ((int)(results[0]));
}
Consumer Code -
-----------------

LHWebService.Re gistration registration = new
LHWebService.Re gistration();
registration.Pr eAuthenticate = true;
registration.Cr edentials =
CredentialCache .DefaultCredent ials;
registration.Ge nerateEntityID
(tableName,numb er,ref entityID);

Would appreciate any help to solve this problem

Regards
Naveen