[Bug 15969] New: Unsigned v1.2.1.93 installer crashes near the end of installation on first run

http://bugs.winehq.org/show_bug.cgi?id=15969

Summary: Unsigned v1.2.1.93 installer crashes near the end of
                    installation on first run
           Product: Wine
           Version: 1.1.8
          Platform: PC
               URL: http://www.unsigned-
                    game.com/releases/Unsigned_v_1_2_1_93_setup.exe
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=17158)
 --> (http://bugs.winehq.org/attachment.cgi?id=17158)
Unsigned v1.2.1.93 installer backtrace

After working around the problem described in 15967 by enabling the virtual
desktop, near the end of the installation phase, the installer suddenly crashes
with a vague backtrace. The crash can only be reproduced once in a clean Wine
prefix; subsequent runs succeed without the offending crash, and attempting to
obtain a relay log causes the crash to seemingly disappear. Backtrace is
attached.