I support two languages in the installation I'm constructing, English and Swedish. In the Media->Releases->Releases->Default Configuration->Release->Build tab, I have selected both English and Swedish as "UI Languages". I have also set Swedish as "Default Language" and set the "Languages Dialog" to Yes.
When I start the installation I'm presented with a "Choose Setup Language" dialog box, which is defaulted to English. Shouldn't this be default to Swedish, which have been set as "Default Language"?
It's best to think of "Default Language" as "Backup Language" in this case. If the settings on the machine match one of the languages in your project, it will use that. If none match, it will use the default. Try testing on a French machine, or making an install with Swedish and Spanish, and running on English machine. This same pattern is used for selecting the overall language when the dialog is not presented.
