http://bugs.winehq.org/show_bug.cgi?id=30683
--- Comment #9 from Bruno Jesus 00cpxxx@gmail.com 2012-05-15 15:27:30 CDT --- Try in a new prefix.
mkdir /tmp/new WINEPREFIX=/tmp/new winecfg WINEPREFIX=/tmp/new winetricks vb6run WINEPREFIX=/tmp/new wine <program>
This will not mess with your current prefix.