http://bugs.winehq.org/show_bug.cgi?id=16453
--- Comment #7 from Hans Leidekker hans@meelstraat.net 2008-12-11 09:44:09 --- Another difference between native:
<o:gupdate xmlns:o="http://www.google.com/update2/request" protocol="2.0"...
and builtin:
<o:gupdate protocol="2.0"...
So the xmlns attribute is missing from builtin generated xml.