http://bugs.winehq.org/show_bug.cgi?id=30574
--- Comment #4 from Hans Leidekker hans@meelstraat.net 2012-05-03 04:58:06 CDT --- Created attachment 40008 --> http://bugs.winehq.org/attachment.cgi?id=40008 advapi32: Return a fake handle from EventRegister.
This is a bit of a stab in the dark but does this patch make any difference? What is your Windows version set to?