http://bugs.winehq.org/show_bug.cgi?id=15781
--- Comment #3 from Dmitry Timoshkov dmitry@codeweavers.com 2010-07-13 00:41:51 --- (In reply to comment #2)
It also fails for me here, even with LANG=DE_de.UTF-8, complaining about a language mismatch. The title of the dialog is "Visual Basic 6.0 Setup Toolkit", and the text is:
If that's not a typo I'd suggest to try with LANG=de_DE.UTF-8 (which is the correct locale name).