«

Could the difference simply be a difference in versioning
of the .Net Framework across the two platforms? Or even
the XML parser?

Take a look at this document:

ms-
help://MS.VSCC/MS.MSDNVS/cpguide/html/cpconcustomizingsoap
inaspnetwebserviceswebserviceclients.htm



>-----Original Message-----
>Hi
>
>I have a WebService calling a Method in a Remote Object.
The Remote method Returns an Object. This Webservice also
returns the same object. All things are working fine when
this Web Service is running in a Windows XP. But when I
am trying to run the same webservice in a Windows 2000
Advanced Server Machine, I am getting the following error.
>
>â?oSystem.Web.Services.Protocols.SoapException: Server
was unable to process request. System.Exception: Return
argument has an invalid type. at MyComponent.Users.DoLogin
(String userName, String password)â?�
>
>When I am running some other Web Methods returning void
or string or integer, its working fine.
>
>So when I am running a webmethod returning an object in
a Windows 2000 Advanced Server machine, anything has to
be done related security, etc..
>
>Why am I getting such error in Windows 2000 Advanced
Server machine only?
>
>Thanks and Regards
>
>Siva
>
>
>---
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http://www.wimdows.net/newsgroups/
>.
>