http://bugs.winehq.org/show_bug.cgi?id=24897
--- Comment #10 from Nikolay Sivov bunglehead@gmail.com 2010-10-28 18:57:03 CDT --- It fails for you because of libxml2 change that introduce a regression at wine side.
Particular commit is http://git.gnome.org/browse/libxml2/commit/?id=373345764b92c5959154ec233163a... (see commit comment and comment at xmlParseEncodingDecl chunk).
Commit is between 2.6.32 and 2.7.0.
I'll prepare a workaround for that.