I have a 6 language survey and wanted to add an explicit language switch question at the beginning of my survey instead of relying on the user to find the language switch dropbox at the upper right hand corner. When I select the language in the language switch question dropbox, the page does not refresh in the selected language as it does when using the switcher in the upper right-hand corner. Am I doing something wrong?

This may not be a perfect solution for you but you can create the language question in a separate group at the beginning. If you use group by group mode and this is the only question in the group the language will refresh on the next page.
Cheers