I have an ASP.NET application with a <codeSubDirectories> section in web.config. My main project is in VB.NET but I have a CSCode subdirectory under App\_Code written in C#. Now for every new sub application I create I have to create a CSCode folder under App\_Code. Microsoft's documentation says there is a <clear /> element but I get an error when I add it to the sub application's web.config file. What's going on?