I\'m working on a ASP.NET MVC2 project, for which I have configured the localisation as follows ...
doh!
I think when I switched my "usual working folder" to the branch this was in, I had some files in a "App_GlobalResources" folder.
I just tried to create a new App_GlobalResources folder in VS2010 and it told me there was already one there, but it wasn't in the solution explorer.
I looked in windows explorer a number of times and just didn't see that folder.
Anyway, problem solved!
moral: don't trust solution explorer or svn switch to delete files that don't belong in the working copy :'(