http://bugs.winehq.org/show_bug.cgi?id=20723
--- Comment #6 from Benjamin Schulz Benjamin_Schulz@gmx.de 2009-11-18 03:34:42 --- Perhaps it is a regression.
However, I wonder why those installer packages often fail in wine.
Installshield allows to download trial versions of their setup-creator development environments: http://www.flexerasoftware.com/resources/trials.htm#installshield
Microsoft released their installer development system for free: http://de.wikipedia.org/wiki/Windows_Installer_XML
It seems that it is not hard to obtain the development environment applications which are used to create those windows installers.
Hence, there should be the possibility for an open source project, to create own installers, run them in wine, and closely examine, where something goes wrong.
I think something like this should be done. Since many applications use those windows installer now.
I have used this installshield and windows installer development environments around 5 years ago. From what I remember, these systems were similar to a simple scripting language (that is: not a complete programming language), with only some settings left that the developer could control.
Perhaps by looking at the development environments of those installer programs, one can create some test cases for wine.