http://bugs.winehq.org/show_bug.cgi?id=30558
--- Comment #2 from Hans Leidekker hans@meelstraat.net 2012-05-01 05:53:12 CDT --- I've sent a patch to fix this. There are at least two more bugs after this one. We wrongly called DispGetParam to fetch the value parameter for the Property method (as well as a couple of other methods). I've sent another path to fix this.
With these two patches installation proceeds, but only with native vbscript. There seems to be a problem with the way vbscript invokes DISPATCH_PROPERTYPUT methods.