http://bugs.winehq.org/show_bug.cgi?id=14545
--- Comment #21 from Dawid Hanak nugrud@gmail.com 2009-05-05 05:41:09 --- The PreInit.bat script has a line:
call BGT\Install\PreSetup.bat 2>&1|BGT\Install\mtee Setup-BGTDOS.DEBUG
The bug #15194 entry claims that "2>&1" does not work in wine's cmd.exe, so it might be another issue here.