ASP.NET Localization - use default resource

Question

I am running into trouble given the following setup:

• Operating System is Windows 7 English, Format is German (Germany), Location is Germany
• My Application (MVC2, .NET 4) contains 2 Resource-Files, Labels.resx (containing German content) and Labels.en.resx (containing English content)
• CurrentCulture and CurrentUICulture are set to de-DE very early (by initializing the controller)

But the framework chooses to take the Labels.en.resx instead of using what I am expecting, the default one. So why does the fallback mechanism not work here? Any ideas?

Answer 1

Seems to be a bug related to ASP.NET 4.0. When compiling the project against 3.5 all works as expected.