WSE032: There was an error loading the microsoft.web.services2

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Hi.

I have a Web Service that implements custom UsernameToken authentication
using the WSE 2.0 library.
If I call that Web Service from a VB.Net Windows Forms application
everything works fine.
My problem is when I try to call that Web Service from an ASP.NET
application. In this scenario the following error occurs:

WSE032: There was an error loading the microsoft.web.services2
configuration section

If I remove the custom UsernameToken authentication and use default
UsernameToken authentication everything works fine even in the ASP.NET
application however I really need custom UsernameToken authentication.

Thanks in advance.
Best regards,
Sérgio Martins
.