The view 'Save' or its master was not found in IIS. Works in Cassini.

Question

I have an MVC app with a Partial View whose form action is /Content/Items/Save. There is no view called "Save" but the ItemsController.Save action calls Edit or Create as needed. These methods both return RedirectToAction("Index") upon success. In Visual Studio, this all works fine. In IIS, I get the above message when submitting from the Create view (but the Edit view works fine). Any ideas?

Thanks.