升级到mvc rc后，我的asp.net mvc应用程序中没有样式

I am very confused because I am using iis7 integrated and so I should not need default.aspx in my project. However, after upgrading to rc at run time there is no style anywhere in my site. Here is my link to the style sheet that lives along side the master page. At design time, vs is able to pick up the style sheet so I have no idea whatt might be going wrong.I am very confused because I am using iis7 inte