http://bugs.winehq.org/show_bug.cgi?id=31112
--- Comment #6 from Luca Viggiani lviggiani@gmail.com 2012-07-03 05:20:21 CDT --- I've looked at PlayOnLinux project and saw that it is using wine 1.5.3 for the installation script of Office 2010. I've tested it and it works under playonlinux. So I've tried to install the same packages/dlls and set the same overrides done by play on linux but with wine 1.5.7 I still have the same bug.
Also, I remember that I started having this bug after upgrading to wine 1.5.6, thus my guess is that this is a regression introduced between 1.5.4 and 1.5.6