WSALookupServiceBegin, P2P & Tablet PC Failure

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There seems to be a problem with P2P SDK, WSALookupServiceBegin in
WinXP Tablet PC edition (Service Pack 2 )

Running the P2P graph chat example, the function call fails with error
code WSAEFAULT (10014).

As far as I understand, there seems to be a problem when setting the
dwNameSpace member variable of WSAQUERYSET struct to NS_PNRPNAME.

querySet.dwNameSpace = NS_PNRPNAME;

The peer name resolution & registration code works without any
problems at every other machine.

Is this a specific Tablet PC WINXP constraint of some kind?

Thanks,

Kostas

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