[Bug 34776] New: explorer.exe does not start

http://bugs.winehq.org/show_bug.cgi?id=34776

Bug #: 34776
           Summary: explorer.exe does not start
           Product: Wine
           Version: unspecified
          Platform: x86-64
        OS/Version: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 46371
  --> http://bugs.winehq.org/attachment.cgi?id=46371
Debug output when explorer.exe does not start

The git master (29c6e10fd) no longer starts explorer.exe with this command
line:

DYLD_FALLBACK_LIBRARY_PATH=/opt/X11/lib/ ./wine explorer.exe

(DFLP for freetype libraries)

Nothing appears on the screen, and the default debug output is quite silent.
With earlier versions

I was able to use git bisect to track the problem down to this commit:

[7370a565436b404570b1b1c4ad58a320368fbd7a] user32: Delay registration of the
builtin classes until the first window is created.

Mac OS X 10.7.5.