webservice. using dime with wse2

[Ero]

Hello,

I have a simple webmethod to send Dime attachments using WSE 2 :

[WebMethod]

public void CreateDimedImage()

{

SoapContext respContext = ResponseSoapContext.Current; // the problem is
here. I always have ResponseSoapContext.Current = null.

DimeAttachment dimeAttach = new DimeAttachment("image/gif",
TypeFormat.MediaType, "C:\\temp\\help.gif");

respContext.Attachments.Add(dimeAttach);

}

when I try to trace this method I see ResponseSoapContext.Current as
<undefined value>.

when I try to access method using client application, I get Exception:

An unhandled exception of type 'System.Web.Services.Protocols.SoapException'
occurred in system.web.services.dll

Additional information: System.Web.Services.Protocols.SoapException: Server
was unable to process request. ---> System.NullReferenceException: Object
reference not set to an instance of an object.
at WSPrototechnika.DimeService.CreateDimedImage() in
c:\inetpub\wwwroot\WSPrototechnika\DimeService.asm x.cs:line 68
--- End of inner exception stack trace ---

I included this to my web.config :

<soapExtensionTypes>
<add type="Microsoft.Web.Services2.WebServicesExtension ,
Microsoft.Web.Services2,Version=2.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35"
priority="1" group="0"/>
</soapExtensionTypes>
I heard this can happen because of some security restriction. If so, how can
I check this?